/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:10:21,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:10:21,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:10:21,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:10:21,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:10:21,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:10:21,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:10:21,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:10:21,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:10:21,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:10:21,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:10:21,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:10:21,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:10:21,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:10:21,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:10:21,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:10:21,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:10:21,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:10:21,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:10:21,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:10:21,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:10:21,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:10:21,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:10:21,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:10:21,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:10:21,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:10:21,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:10:21,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:10:21,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:10:21,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:10:21,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:10:21,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:10:21,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:10:21,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:10:21,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:10:21,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:10:21,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:10:21,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:10:21,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:10:21,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:10:21,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:10:21,350 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 [2020-10-12 16:10:21,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:10:21,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:10:21,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:10:21,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:10:21,398 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:10:21,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:10:21,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:10:21,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:10:21,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:10:21,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:10:21,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:10:21,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:10:21,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:10:21,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:10:21,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:10:21,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:10:21,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:10:21,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:10:21,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:10:21,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:10:21,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:10:21,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:10:21,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:10:21,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:10:21,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:10:21,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:10:21,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:10:21,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:10:21,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:10:21,404 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:10:21,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:10:21,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:10:21,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:10:21,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:10:21,715 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:10:21,716 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c [2020-10-12 16:10:21,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5abaff1fd/8cf81fef0f0e42de932db93cb09136fd/FLAG2a88547c7 [2020-10-12 16:10:22,263 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:10:22,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/iftelse.c [2020-10-12 16:10:22,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5abaff1fd/8cf81fef0f0e42de932db93cb09136fd/FLAG2a88547c7 [2020-10-12 16:10:22,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5abaff1fd/8cf81fef0f0e42de932db93cb09136fd [2020-10-12 16:10:22,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:10:22,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:10:22,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:10:22,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:10:22,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:10:22,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:22,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4142a17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22, skipping insertion in model container [2020-10-12 16:10:22,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:22,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:10:22,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:10:22,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:10:22,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:10:22,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:10:22,904 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:10:22,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22 WrapperNode [2020-10-12 16:10:22,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:10:22,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:10:22,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:10:22,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:10:22,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:22,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:23,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:23,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:23,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:23,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:23,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (1/1) ... [2020-10-12 16:10:23,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:10:23,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:10:23,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:10:23,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:10:23,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (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 [2020-10-12 16:10:23,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:10:23,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:10:23,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:10:23,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:10:23,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:10:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:10:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:10:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:10:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:10:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:10:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:10:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:10:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:10:23,276 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:10:23,277 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:10:23,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:10:23 BoogieIcfgContainer [2020-10-12 16:10:23,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:10:23,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:10:23,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:10:23,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:10:23,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:10:22" (1/3) ... [2020-10-12 16:10:23,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f19cb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:10:23, skipping insertion in model container [2020-10-12 16:10:23,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:10:22" (2/3) ... [2020-10-12 16:10:23,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f19cb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:10:23, skipping insertion in model container [2020-10-12 16:10:23,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:10:23" (3/3) ... [2020-10-12 16:10:23,290 INFO L109 eAbstractionObserver]: Analyzing ICFG iftelse.c [2020-10-12 16:10:23,301 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:10:23,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:10:23,339 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:10:23,405 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:10:23,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:10:23,405 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:10:23,406 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:10:23,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:10:23,406 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:10:23,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:10:23,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:10:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-12 16:10:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 16:10:23,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:23,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:23,440 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:23,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1240854710, now seen corresponding path program 1 times [2020-10-12 16:10:23,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:23,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137994601] [2020-10-12 16:10:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:24,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:24,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:10:24,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:24,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-12 16:10:24,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:10:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:10:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 16:10:24,606 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 14 [2020-10-12 16:10:24,774 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 21 [2020-10-12 16:10:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:10:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:24,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:24,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:10:24,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:10:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:10:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:10:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:10:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:10:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:10:24,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137994601] [2020-10-12 16:10:24,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:10:24,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:10:24,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916098087] [2020-10-12 16:10:24,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:10:24,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:10:24,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:10:24,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:10:24,860 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 8 states. [2020-10-12 16:10:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:10:25,175 INFO L93 Difference]: Finished difference Result 58 states and 81 transitions. [2020-10-12 16:10:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:10:25,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-12 16:10:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:10:25,189 INFO L225 Difference]: With dead ends: 58 [2020-10-12 16:10:25,190 INFO L226 Difference]: Without dead ends: 29 [2020-10-12 16:10:25,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:10:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-12 16:10:25,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-12 16:10:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-12 16:10:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-12 16:10:25,263 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2020-10-12 16:10:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:10:25,264 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-12 16:10:25,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:10:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-12 16:10:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 16:10:25,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:25,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:25,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:10:25,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1298113012, now seen corresponding path program 1 times [2020-10-12 16:10:25,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:25,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158473325] [2020-10-12 16:10:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:25,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:25,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:10:25,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:25,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 16:10:25,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:25,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:10:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:10:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:10:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:10:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:25,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:25,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:10:25,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:10:25,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:10:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:10:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:10:25,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:10:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:10:25,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158473325] [2020-10-12 16:10:25,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:10:25,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:10:25,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373077295] [2020-10-12 16:10:25,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:10:25,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:10:25,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:10:25,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:10:25,533 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-10-12 16:10:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:10:27,757 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-10-12 16:10:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:10:27,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-12 16:10:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:10:27,762 INFO L225 Difference]: With dead ends: 41 [2020-10-12 16:10:27,762 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 16:10:27,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:10:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 16:10:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-12 16:10:27,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 16:10:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-12 16:10:27,781 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 14 [2020-10-12 16:10:27,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:10:27,782 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-12 16:10:27,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:10:27,782 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-12 16:10:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 16:10:27,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:27,785 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:27,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:10:27,785 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:27,786 INFO L82 PathProgramCache]: Analyzing trace with hash -70212629, now seen corresponding path program 1 times [2020-10-12 16:10:27,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:27,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181480856] [2020-10-12 16:10:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:27,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:28,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 16:10:28,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:10:28,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-12 16:10:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:10:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:10:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:10:28,474 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 20 [2020-10-12 16:10:28,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:10:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:28,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:10:28,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:10:28,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:10:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:10:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:10:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:10:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:10:28,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181480856] [2020-10-12 16:10:28,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:10:28,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 16:10:28,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826002208] [2020-10-12 16:10:28,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:10:28,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:10:28,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:10:28,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:10:28,519 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 9 states. [2020-10-12 16:10:28,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:10:28,819 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-12 16:10:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:10:28,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-12 16:10:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:10:28,821 INFO L225 Difference]: With dead ends: 44 [2020-10-12 16:10:28,821 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 16:10:28,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:10:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 16:10:28,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 16:10:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 16:10:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-12 16:10:28,834 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 17 [2020-10-12 16:10:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:10:28,835 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-12 16:10:28,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:10:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-12 16:10:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:10:28,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:28,836 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:28,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:10:28,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:28,837 INFO L82 PathProgramCache]: Analyzing trace with hash 298022744, now seen corresponding path program 2 times [2020-10-12 16:10:28,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:28,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714853796] [2020-10-12 16:10:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:29,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:29,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:10:29,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 16:10:29,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-12 16:10:29,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 16:10:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:10:29,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:10:29,720 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 23 [2020-10-12 16:10:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:10:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:29,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:29,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:10:29,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:10:29,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:10:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:10:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:10:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:10:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:10:29,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714853796] [2020-10-12 16:10:29,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:10:29,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 16:10:29,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450546922] [2020-10-12 16:10:29,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:10:29,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:10:29,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:10:29,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:10:29,773 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 11 states. [2020-10-12 16:10:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:10:30,144 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-10-12 16:10:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:10:30,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-10-12 16:10:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:10:30,146 INFO L225 Difference]: With dead ends: 67 [2020-10-12 16:10:30,147 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 16:10:30,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-12 16:10:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 16:10:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-10-12 16:10:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 16:10:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-12 16:10:30,159 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 20 [2020-10-12 16:10:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:10:30,159 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-12 16:10:30,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:10:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-12 16:10:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 16:10:30,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:30,161 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:30,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:10:30,161 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:30,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:30,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1108804105, now seen corresponding path program 3 times [2020-10-12 16:10:30,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:30,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373722304] [2020-10-12 16:10:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:30,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:31,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:31,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 16:10:31,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 16:10:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-12 16:10:31,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 16:10:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 16:10:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:10:31,497 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 24 [2020-10-12 16:10:31,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:10:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:31,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:31,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:10:31,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:31,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:10:31,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:10:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:10:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:10:31,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:10:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 16:10:31,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373722304] [2020-10-12 16:10:31,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:10:31,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 16:10:31,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212413135] [2020-10-12 16:10:31,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:10:31,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:10:31,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:10:31,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:10:31,543 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 11 states. [2020-10-12 16:10:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:10:33,890 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-10-12 16:10:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:10:33,890 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-10-12 16:10:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:10:33,892 INFO L225 Difference]: With dead ends: 67 [2020-10-12 16:10:33,892 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 16:10:33,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:10:33,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 16:10:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-12 16:10:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 16:10:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-12 16:10:33,902 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 23 [2020-10-12 16:10:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:10:33,903 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-12 16:10:33,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:10:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-12 16:10:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 16:10:33,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:33,904 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:33,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:10:33,905 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:33,905 INFO L82 PathProgramCache]: Analyzing trace with hash 142998650, now seen corresponding path program 4 times [2020-10-12 16:10:33,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:33,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565263004] [2020-10-12 16:10:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:33,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:34,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:34,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 16:10:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-12 16:10:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-12 16:10:34,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 16:10:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 16:10:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:10:35,391 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 25 [2020-10-12 16:10:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:10:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:35,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:10:35,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:10:35,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:10:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:10:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:10:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:10:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:10:35,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565263004] [2020-10-12 16:10:35,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:10:35,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 16:10:35,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488491912] [2020-10-12 16:10:35,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:10:35,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:10:35,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:10:35,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:10:35,473 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 14 states. [2020-10-12 16:10:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:10:36,091 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-12 16:10:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:10:36,093 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-10-12 16:10:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:10:36,094 INFO L225 Difference]: With dead ends: 68 [2020-10-12 16:10:36,095 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 16:10:36,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-10-12 16:10:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 16:10:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 16:10:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 16:10:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-12 16:10:36,117 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 26 [2020-10-12 16:10:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:10:36,118 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-12 16:10:36,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:10:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-12 16:10:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 16:10:36,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:36,124 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:36,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:10:36,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash 153395228, now seen corresponding path program 5 times [2020-10-12 16:10:36,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:36,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683196570] [2020-10-12 16:10:36,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:38,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:38,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 16:10:38,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 49 [2020-10-12 16:10:38,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2111 [2020-10-12 16:10:38,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 16:10:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 16:10:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:10:38,750 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2020-10-12 16:10:38,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:10:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:38,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:38,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:10:38,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:10:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:10:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:10:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:10:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:10:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:10:38,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683196570] [2020-10-12 16:10:38,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:10:38,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 16:10:38,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343282170] [2020-10-12 16:10:38,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 16:10:38,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:10:38,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 16:10:38,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:10:38,823 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 17 states. [2020-10-12 16:10:39,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:10:39,678 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-12 16:10:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 16:10:39,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2020-10-12 16:10:39,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:10:39,680 INFO L225 Difference]: With dead ends: 84 [2020-10-12 16:10:39,681 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 16:10:39,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2020-10-12 16:10:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 16:10:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 16:10:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 16:10:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-12 16:10:39,706 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 32 [2020-10-12 16:10:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:10:39,708 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-12 16:10:39,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 16:10:39,709 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-12 16:10:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 16:10:39,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:39,712 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:39,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:10:39,712 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:39,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:39,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1397849538, now seen corresponding path program 6 times [2020-10-12 16:10:39,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:39,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769622607] [2020-10-12 16:10:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:42,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:42,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 16:10:42,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 81 [2020-10-12 16:10:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2709 [2020-10-12 16:10:42,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 16:10:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 16:10:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:10:43,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:10:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:43,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:43,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:10:43,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:10:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:10:43,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:10:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:10:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:10:43,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:10:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:10:43,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769622607] [2020-10-12 16:10:43,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:10:43,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 16:10:43,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721343268] [2020-10-12 16:10:43,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 16:10:43,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:10:43,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 16:10:43,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-12 16:10:43,038 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 20 states. [2020-10-12 16:10:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:10:44,190 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2020-10-12 16:10:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 16:10:44,191 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2020-10-12 16:10:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:10:44,192 INFO L225 Difference]: With dead ends: 100 [2020-10-12 16:10:44,192 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 16:10:44,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=1174, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 16:10:44,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 16:10:44,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-12 16:10:44,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 16:10:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2020-10-12 16:10:44,214 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 38 [2020-10-12 16:10:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:10:44,214 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2020-10-12 16:10:44,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 16:10:44,214 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2020-10-12 16:10:44,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 16:10:44,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:10:44,217 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:10:44,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:10:44,218 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:10:44,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:10:44,218 INFO L82 PathProgramCache]: Analyzing trace with hash 207274720, now seen corresponding path program 7 times [2020-10-12 16:10:44,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:10:44,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915421236] [2020-10-12 16:10:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:10:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:10:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:10:48,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:10:48,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 16:10:48,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 121 [2020-10-12 16:10:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4271 [2020-10-12 16:10:48,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:10:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 16:10:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:10:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 16:10:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:11:34,900 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 16 [2020-10-12 16:11:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:11:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:11:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:11:39,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:11:39,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:11:39,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:11:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:11:39,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:11:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:11:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:11:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:11:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:11:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 163 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:11:39,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915421236] [2020-10-12 16:11:39,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:11:39,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 16:11:39,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593209679] [2020-10-12 16:11:39,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 16:11:39,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:11:39,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 16:11:39,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=421, Unknown=23, NotChecked=0, Total=506 [2020-10-12 16:11:39,487 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 23 states. [2020-10-12 16:11:46,091 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2020-10-12 16:13:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:13:52,966 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2020-10-12 16:13:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 16:13:52,966 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2020-10-12 16:13:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:13:52,970 INFO L225 Difference]: With dead ends: 150 [2020-10-12 16:13:52,970 INFO L226 Difference]: Without dead ends: 148 [2020-10-12 16:13:52,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 99.9s TimeCoverageRelationStatistics Valid=185, Invalid=1581, Unknown=40, NotChecked=0, Total=1806 [2020-10-12 16:13:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-12 16:13:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 131. [2020-10-12 16:13:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-12 16:13:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2020-10-12 16:13:52,994 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 44 [2020-10-12 16:13:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:13:52,994 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2020-10-12 16:13:52,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 16:13:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2020-10-12 16:13:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 16:13:52,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:13:52,996 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:13:52,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:13:52,996 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:13:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:13:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash 572896357, now seen corresponding path program 1 times [2020-10-12 16:13:52,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:13:52,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276414990] [2020-10-12 16:13:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:13:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:13:53,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-12 16:13:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:55,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:58,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:13:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 16:13:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 119 [2020-10-12 16:13:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 16:13:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:13:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 16:13:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:13:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 16:13:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:13:59,046 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 35 [2020-10-12 16:13:59,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:13:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:13:59,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:59,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:13:59,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:13:59,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:13:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:13:59,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:13:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:13:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:13:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:13:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:13:59,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 16:13:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:13:59,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:13:59,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:13:59,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:13:59,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:13:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:13:59,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:13:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:13:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:13:59,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:13:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:13:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 2 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:13:59,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276414990] [2020-10-12 16:13:59,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:13:59,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 16:13:59,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068652829] [2020-10-12 16:13:59,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 16:13:59,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:13:59,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 16:13:59,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-10-12 16:13:59,181 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand 23 states. [2020-10-12 16:14:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:14:01,120 INFO L93 Difference]: Finished difference Result 155 states and 177 transitions. [2020-10-12 16:14:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 16:14:01,121 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 49 [2020-10-12 16:14:01,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:14:01,124 INFO L225 Difference]: With dead ends: 155 [2020-10-12 16:14:01,124 INFO L226 Difference]: Without dead ends: 153 [2020-10-12 16:14:01,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=163, Invalid=1729, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 16:14:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-12 16:14:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2020-10-12 16:14:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-12 16:14:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2020-10-12 16:14:01,147 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 49 [2020-10-12 16:14:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:14:01,147 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2020-10-12 16:14:01,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 16:14:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2020-10-12 16:14:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 16:14:01,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:14:01,148 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:14:01,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 16:14:01,149 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:14:01,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:14:01,149 INFO L82 PathProgramCache]: Analyzing trace with hash 59277826, now seen corresponding path program 8 times [2020-10-12 16:14:01,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:14:01,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332683448] [2020-10-12 16:14:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:14:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:01,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:01,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-12 16:14:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:06,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 16:14:06,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 169 [2020-10-12 16:14:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4945 [2020-10-12 16:14:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 16:14:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:14:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 16:14:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:07,293 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 23 [2020-10-12 16:14:07,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:14:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:07,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:07,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:14:07,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:14:07,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:14:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:14:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:14:07,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332683448] [2020-10-12 16:14:07,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:14:07,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 16:14:07,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490625407] [2020-10-12 16:14:07,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 16:14:07,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:14:07,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 16:14:07,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2020-10-12 16:14:07,412 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand 26 states. [2020-10-12 16:14:09,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:14:09,403 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2020-10-12 16:14:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 16:14:09,404 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2020-10-12 16:14:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:14:09,406 INFO L225 Difference]: With dead ends: 170 [2020-10-12 16:14:09,406 INFO L226 Difference]: Without dead ends: 168 [2020-10-12 16:14:09,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2020-10-12 16:14:09,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-12 16:14:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-10-12 16:14:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-12 16:14:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2020-10-12 16:14:09,429 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 50 [2020-10-12 16:14:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:14:09,430 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2020-10-12 16:14:09,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 16:14:09,430 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2020-10-12 16:14:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 16:14:09,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:14:09,431 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:14:09,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 16:14:09,432 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:14:09,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:14:09,432 INFO L82 PathProgramCache]: Analyzing trace with hash -239149148, now seen corresponding path program 9 times [2020-10-12 16:14:09,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:14:09,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285681910] [2020-10-12 16:14:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:14:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-12 16:14:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:14,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:14,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 16:14:14,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 225 [2020-10-12 16:14:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 16:14:14,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 16:14:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:14:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 16:14:14,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:15,581 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 22 [2020-10-12 16:14:15,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:14:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:15,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:15,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:15,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:14:15,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:15,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:14:15,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:14:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:14:15,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:14:15,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285681910] [2020-10-12 16:14:15,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:14:15,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 16:14:15,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803650395] [2020-10-12 16:14:15,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 16:14:15,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:14:15,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 16:14:15,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2020-10-12 16:14:15,723 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand 29 states. [2020-10-12 16:14:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:14:18,367 INFO L93 Difference]: Finished difference Result 186 states and 212 transitions. [2020-10-12 16:14:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 16:14:18,368 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2020-10-12 16:14:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:14:18,370 INFO L225 Difference]: With dead ends: 186 [2020-10-12 16:14:18,370 INFO L226 Difference]: Without dead ends: 184 [2020-10-12 16:14:18,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=182, Invalid=2788, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 16:14:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-12 16:14:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2020-10-12 16:14:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-12 16:14:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 209 transitions. [2020-10-12 16:14:18,394 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 209 transitions. Word has length 56 [2020-10-12 16:14:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:14:18,395 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 209 transitions. [2020-10-12 16:14:18,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 16:14:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 209 transitions. [2020-10-12 16:14:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 16:14:18,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:14:18,396 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:14:18,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 16:14:18,397 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:14:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:14:18,397 INFO L82 PathProgramCache]: Analyzing trace with hash -55772218, now seen corresponding path program 10 times [2020-10-12 16:14:18,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:14:18,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017573903] [2020-10-12 16:14:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:14:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-12 16:14:22,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-12 16:14:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:23,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 16:14:23,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 288 [2020-10-12 16:14:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 16:14:23,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 16:14:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 16:14:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:14:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:23,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:23,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:14:23,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 16:14:23,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:14:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:14:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-10-12 16:14:23,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017573903] [2020-10-12 16:14:23,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:14:23,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 16:14:23,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294923950] [2020-10-12 16:14:23,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 16:14:23,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:14:23,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 16:14:23,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:14:23,443 INFO L87 Difference]: Start difference. First operand 183 states and 209 transitions. Second operand 4 states. [2020-10-12 16:14:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:14:23,516 INFO L93 Difference]: Finished difference Result 328 states and 370 transitions. [2020-10-12 16:14:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 16:14:23,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-12 16:14:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:14:23,520 INFO L225 Difference]: With dead ends: 328 [2020-10-12 16:14:23,520 INFO L226 Difference]: Without dead ends: 145 [2020-10-12 16:14:23,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:14:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-12 16:14:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-10-12 16:14:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-12 16:14:23,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2020-10-12 16:14:23,544 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 62 [2020-10-12 16:14:23,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:14:23,544 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2020-10-12 16:14:23,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 16:14:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2020-10-12 16:14:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 16:14:23,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:14:23,553 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:14:23,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 16:14:23,553 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:14:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:14:23,554 INFO L82 PathProgramCache]: Analyzing trace with hash 270077446, now seen corresponding path program 1 times [2020-10-12 16:14:23,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:14:23,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870186221] [2020-10-12 16:14:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:14:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:28,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:28,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 16:14:28,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:14:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 16:14:28,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:28,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 16:14:28,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:14:28,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 16:14:28,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:14:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:14:30,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:14:30,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:14:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:14:30,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:14:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:14:30,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:14:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:14:30,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 16:14:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 16:14:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:14:30,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 16:14:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:14:30,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 16:14:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 16:14:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 16:14:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:14:30,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 16:14:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:14:30,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 16:14:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 16:14:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:14:30,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 16:14:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-12 16:14:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 16:14:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 16:14:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 16:14:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:30,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:14:30,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:14:30,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:14:30,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:14:30,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:14:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:14:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:14:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:14:30,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:14:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 32 proven. 544 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-12 16:14:30,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870186221] [2020-10-12 16:14:30,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:14:30,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 16:14:30,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002580596] [2020-10-12 16:14:30,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 16:14:30,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:14:30,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 16:14:30,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2020-10-12 16:14:30,261 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 32 states. [2020-10-12 16:14:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:14:32,834 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2020-10-12 16:14:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 16:14:32,835 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 142 [2020-10-12 16:14:32,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:14:32,837 INFO L225 Difference]: With dead ends: 164 [2020-10-12 16:14:32,837 INFO L226 Difference]: Without dead ends: 162 [2020-10-12 16:14:32,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=278, Invalid=3382, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 16:14:32,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-12 16:14:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-12 16:14:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 16:14:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2020-10-12 16:14:32,855 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 142 [2020-10-12 16:14:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:14:32,855 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2020-10-12 16:14:32,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 16:14:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2020-10-12 16:14:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 16:14:32,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:14:32,858 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:14:32,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 16:14:32,858 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:14:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:14:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash -410986576, now seen corresponding path program 2 times [2020-10-12 16:14:32,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:14:32,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262647767] [2020-10-12 16:14:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:14:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:14:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:14:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking...