/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_init8_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:02:33,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:02:33,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:02:33,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:02:33,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:02:33,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:02:33,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:02:33,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:02:33,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:02:33,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:02:33,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:02:33,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:02:33,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:02:33,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:02:33,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:02:33,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:02:33,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:02:33,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:02:33,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:02:33,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:02:33,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:02:33,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:02:33,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:02:33,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:02:33,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:02:33,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:02:33,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:02:33,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:02:33,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:02:33,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:02:33,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:02:33,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:02:33,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:02:33,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:02:33,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:02:33,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:02:33,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:02:33,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:02:33,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:02:33,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:02:33,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:02:33,595 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 [2020-10-28 09:02:33,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:02:33,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:02:33,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:02:33,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:02:33,654 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:02:33,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:02:33,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:02:33,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:02:33,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:02:33,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:02:33,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:02:33,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:02:33,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:02:33,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:02:33,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:02:33,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:02:33,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:02:33,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:02:33,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:02:33,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:02:33,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:02:33,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:02:33,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:02:33,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:02:33,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:02:33,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:02:33,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:02:33,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:02:33,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:02:33,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:02:34,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:02:34,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:02:34,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:02:34,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:02:34,061 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:02:34,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-1.i [2020-10-28 09:02:34,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d3c4a39e/547f8d2f1adb4cf68fbeea0bb1f14ac1/FLAG722afbcd7 [2020-10-28 09:02:34,864 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:02:34,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init8_ground-1.i [2020-10-28 09:02:34,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d3c4a39e/547f8d2f1adb4cf68fbeea0bb1f14ac1/FLAG722afbcd7 [2020-10-28 09:02:35,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d3c4a39e/547f8d2f1adb4cf68fbeea0bb1f14ac1 [2020-10-28 09:02:35,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:02:35,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:02:35,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:02:35,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:02:35,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:02:35,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b3267a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35, skipping insertion in model container [2020-10-28 09:02:35,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:02:35,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:02:35,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:02:35,462 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:02:35,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:02:35,505 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:02:35,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35 WrapperNode [2020-10-28 09:02:35,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:02:35,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:02:35,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:02:35,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:02:35,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (1/1) ... [2020-10-28 09:02:35,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:02:35,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:02:35,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:02:35,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:02:35,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (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 [2020-10-28 09:02:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:02:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:02:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:02:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:02:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:02:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:02:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:02:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:02:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:02:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:02:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:02:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:02:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:02:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:02:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:02:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:02:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:02:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:02:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:02:35,958 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:02:35,959 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-28 09:02:35,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:35 BoogieIcfgContainer [2020-10-28 09:02:35,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:02:35,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:02:35,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:02:35,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:02:35,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:02:35" (1/3) ... [2020-10-28 09:02:35,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74589eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:35, skipping insertion in model container [2020-10-28 09:02:35,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:35" (2/3) ... [2020-10-28 09:02:35,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74589eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:35, skipping insertion in model container [2020-10-28 09:02:35,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:35" (3/3) ... [2020-10-28 09:02:35,972 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-1.i [2020-10-28 09:02:35,989 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:02:35,996 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:02:36,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:02:36,054 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:02:36,054 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:02:36,055 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:02:36,055 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:02:36,055 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:02:36,055 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:02:36,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:02:36,056 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:02:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-28 09:02:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:02:36,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:36,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:36,095 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1772990658, now seen corresponding path program 1 times [2020-10-28 09:02:36,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:36,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668684498] [2020-10-28 09:02:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:36,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:36,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:39,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:02:39,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:02:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3100 [2020-10-28 09:02:39,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:39,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 09:02:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:02:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:39,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:39,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:39,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:02:39,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:39,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:02:39,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668684498] [2020-10-28 09:02:39,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:02:39,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:02:39,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898955632] [2020-10-28 09:02:39,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:02:39,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:39,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:02:39,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:02:39,630 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-10-28 09:02:39,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:39,815 INFO L93 Difference]: Finished difference Result 74 states and 112 transitions. [2020-10-28 09:02:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:02:39,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-28 09:02:39,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:39,825 INFO L225 Difference]: With dead ends: 74 [2020-10-28 09:02:39,825 INFO L226 Difference]: Without dead ends: 34 [2020-10-28 09:02:39,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:02:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-28 09:02:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-28 09:02:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 09:02:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-10-28 09:02:39,872 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 29 [2020-10-28 09:02:39,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:39,873 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-28 09:02:39,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:02:39,873 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-10-28 09:02:39,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:02:39,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:39,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:39,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:02:39,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:39,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:39,876 INFO L82 PathProgramCache]: Analyzing trace with hash -474542150, now seen corresponding path program 1 times [2020-10-28 09:02:39,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:39,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632845888] [2020-10-28 09:02:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:44,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:02:44,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:02:44,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4838 [2020-10-28 09:02:44,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:44,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:44,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:02:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:02:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:02:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:44,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:44,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:44,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:44,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:02:44,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:44,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:02:44,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632845888] [2020-10-28 09:02:44,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:02:44,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:02:44,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55120133] [2020-10-28 09:02:44,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:02:44,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:44,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:02:44,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:02:44,864 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 4 states. [2020-10-28 09:02:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:45,036 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2020-10-28 09:02:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:02:45,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 09:02:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:45,039 INFO L225 Difference]: With dead ends: 69 [2020-10-28 09:02:45,040 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 09:02:45,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:02:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 09:02:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 09:02:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 09:02:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-28 09:02:45,065 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2020-10-28 09:02:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:45,067 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-28 09:02:45,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:02:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-28 09:02:45,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 09:02:45,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:45,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:45,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:02:45,070 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:45,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1440650294, now seen corresponding path program 1 times [2020-10-28 09:02:45,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:45,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685768429] [2020-10-28 09:02:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:45,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:50,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 09:02:50,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:02:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:02:50,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:50,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:50,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:02:50,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:02:50,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:02:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:50,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:02:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:50,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 09:02:50,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685768429] [2020-10-28 09:02:50,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:50,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:02:50,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593542798] [2020-10-28 09:02:50,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:02:50,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:50,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:02:50,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:02:50,194 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2020-10-28 09:02:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:50,441 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-10-28 09:02:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:02:50,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-28 09:02:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:50,443 INFO L225 Difference]: With dead ends: 84 [2020-10-28 09:02:50,443 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 09:02:50,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:02:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 09:02:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-28 09:02:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:02:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-28 09:02:50,463 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 37 [2020-10-28 09:02:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:50,463 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-28 09:02:50,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:02:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-28 09:02:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:02:50,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:50,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:50,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:02:50,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:50,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:50,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1729417274, now seen corresponding path program 2 times [2020-10-28 09:02:50,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:50,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674825691] [2020-10-28 09:02:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:50,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:55,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 09:02:55,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:02:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:02:55,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:55,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:02:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:02:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:02:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:55,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:55,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:55,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:02:55,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:55,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 09:02:55,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674825691] [2020-10-28 09:02:55,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:55,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:02:55,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894310228] [2020-10-28 09:02:55,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:02:55,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:55,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:02:55,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:02:55,602 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 6 states. [2020-10-28 09:02:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:55,839 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2020-10-28 09:02:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:02:55,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-28 09:02:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:55,841 INFO L225 Difference]: With dead ends: 99 [2020-10-28 09:02:55,841 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 09:02:55,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:02:55,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 09:02:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-28 09:02:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 09:02:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-28 09:02:55,861 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 45 [2020-10-28 09:02:55,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:55,861 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-28 09:02:55,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:02:55,861 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-28 09:02:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:02:55,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:55,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:55,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:02:55,866 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:55,867 INFO L82 PathProgramCache]: Analyzing trace with hash 620300470, now seen corresponding path program 3 times [2020-10-28 09:02:55,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:55,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945159564] [2020-10-28 09:02:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:55,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 09:03:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:03:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:03:00,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:00,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:03:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:03:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:03:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:00,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:00,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:00,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:00,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:00,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:00,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:03:00,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:00,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:00,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:00,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-28 09:03:00,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945159564] [2020-10-28 09:03:00,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:00,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:03:00,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564371316] [2020-10-28 09:03:00,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:03:00,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:00,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:03:00,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:03:00,991 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 7 states. [2020-10-28 09:03:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:01,200 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2020-10-28 09:03:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:03:01,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-28 09:03:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:01,202 INFO L225 Difference]: With dead ends: 114 [2020-10-28 09:03:01,202 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 09:03:01,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:03:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 09:03:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-28 09:03:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-28 09:03:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-28 09:03:01,212 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 53 [2020-10-28 09:03:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:01,212 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-28 09:03:01,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:03:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-28 09:03:01,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 09:03:01,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:01,213 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:01,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:03:01,214 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:01,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:01,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1183117498, now seen corresponding path program 4 times [2020-10-28 09:03:01,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:01,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121328144] [2020-10-28 09:03:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:01,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:01,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:03,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 09:03:06,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:03:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:03:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:06,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:03:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 09:03:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:03:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:06,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:06,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:06,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-28 09:03:06,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121328144] [2020-10-28 09:03:06,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:06,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:03:06,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425819679] [2020-10-28 09:03:06,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:03:06,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:06,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:03:06,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:03:06,334 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 8 states. [2020-10-28 09:03:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:06,500 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2020-10-28 09:03:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:03:06,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-28 09:03:06,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:06,501 INFO L225 Difference]: With dead ends: 129 [2020-10-28 09:03:06,501 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 09:03:06,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:03:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 09:03:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-28 09:03:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 09:03:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-10-28 09:03:06,511 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 61 [2020-10-28 09:03:06,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:06,512 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-10-28 09:03:06,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:03:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-10-28 09:03:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 09:03:06,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:06,513 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:06,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:03:06,514 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:06,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:06,514 INFO L82 PathProgramCache]: Analyzing trace with hash -608395978, now seen corresponding path program 5 times [2020-10-28 09:03:06,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:06,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106875353] [2020-10-28 09:03:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:11,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:11,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 09:03:11,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:03:11,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:11,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:11,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:03:11,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 09:03:11,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:03:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:11,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:11,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:11,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:03:11,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:11,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:11,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:03:11,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106875353] [2020-10-28 09:03:11,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:11,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:03:11,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274930734] [2020-10-28 09:03:11,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:03:11,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:11,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:03:11,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:03:11,659 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 9 states. [2020-10-28 09:03:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:11,953 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2020-10-28 09:03:11,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:03:11,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-28 09:03:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:11,955 INFO L225 Difference]: With dead ends: 144 [2020-10-28 09:03:11,957 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 09:03:11,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:03:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 09:03:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-28 09:03:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 09:03:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-28 09:03:11,979 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 69 [2020-10-28 09:03:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:11,979 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-28 09:03:11,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:03:11,980 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-28 09:03:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 09:03:11,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:11,981 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:11,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:03:11,984 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:11,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1558671674, now seen corresponding path program 6 times [2020-10-28 09:03:11,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:11,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391057346] [2020-10-28 09:03:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:17,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 09:03:17,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:03:17,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:17,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:03:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:03:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:03:17,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:17,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:17,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:17,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:17,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:17,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:17,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-28 09:03:17,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391057346] [2020-10-28 09:03:17,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:17,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:03:17,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767751890] [2020-10-28 09:03:17,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:03:17,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:17,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:03:17,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:03:17,156 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 10 states. [2020-10-28 09:03:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:17,437 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2020-10-28 09:03:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:03:17,442 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-28 09:03:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:17,444 INFO L225 Difference]: With dead ends: 159 [2020-10-28 09:03:17,444 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 09:03:17,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:03:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 09:03:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-28 09:03:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 09:03:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-28 09:03:17,457 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 77 [2020-10-28 09:03:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:17,457 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-28 09:03:17,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:03:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-28 09:03:17,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 09:03:17,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:17,463 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:17,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:03:17,464 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:17,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:17,465 INFO L82 PathProgramCache]: Analyzing trace with hash -909553226, now seen corresponding path program 7 times [2020-10-28 09:03:17,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:17,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947281822] [2020-10-28 09:03:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:03:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:03:22,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:22,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:03:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 09:03:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:03:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:22,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:22,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:22,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:22,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-28 09:03:22,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947281822] [2020-10-28 09:03:22,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:22,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:03:22,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958185026] [2020-10-28 09:03:22,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:03:22,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:22,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:03:22,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:03:22,667 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 11 states. [2020-10-28 09:03:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:22,977 INFO L93 Difference]: Finished difference Result 174 states and 197 transitions. [2020-10-28 09:03:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:03:22,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-10-28 09:03:22,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:22,979 INFO L225 Difference]: With dead ends: 174 [2020-10-28 09:03:22,979 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 09:03:22,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:03:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 09:03:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-28 09:03:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 09:03:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-28 09:03:23,010 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 85 [2020-10-28 09:03:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:23,010 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-28 09:03:23,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:03:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-28 09:03:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 09:03:23,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:23,012 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:23,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:03:23,013 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:23,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:23,017 INFO L82 PathProgramCache]: Analyzing trace with hash 119296442, now seen corresponding path program 8 times [2020-10-28 09:03:23,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:23,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977346115] [2020-10-28 09:03:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:28,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 09:03:28,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:03:28,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:28,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:03:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 09:03:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:03:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:28,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:28,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:28,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:28,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:28,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:28,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-28 09:03:28,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977346115] [2020-10-28 09:03:28,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:28,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:03:28,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461740484] [2020-10-28 09:03:28,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:03:28,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:28,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:03:28,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:03:28,219 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 12 states. [2020-10-28 09:03:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:28,524 INFO L93 Difference]: Finished difference Result 189 states and 212 transitions. [2020-10-28 09:03:28,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:03:28,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-10-28 09:03:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:28,526 INFO L225 Difference]: With dead ends: 189 [2020-10-28 09:03:28,526 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 09:03:28,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:03:28,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 09:03:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-28 09:03:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 09:03:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2020-10-28 09:03:28,550 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 93 [2020-10-28 09:03:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:28,551 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2020-10-28 09:03:28,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:03:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2020-10-28 09:03:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 09:03:28,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:28,552 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:28,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:03:28,552 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:28,553 INFO L82 PathProgramCache]: Analyzing trace with hash -591452618, now seen corresponding path program 9 times [2020-10-28 09:03:28,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:28,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498656458] [2020-10-28 09:03:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:28,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:33,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:33,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 09:03:33,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:03:33,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:33,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:03:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:03:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:03:33,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:33,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:03:33,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:33,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-28 09:03:33,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498656458] [2020-10-28 09:03:33,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:33,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:03:33,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921747901] [2020-10-28 09:03:33,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:03:33,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:33,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:03:33,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:03:33,763 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand 13 states. [2020-10-28 09:03:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:34,092 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2020-10-28 09:03:34,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:03:34,093 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-10-28 09:03:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:34,094 INFO L225 Difference]: With dead ends: 204 [2020-10-28 09:03:34,094 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 09:03:34,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:03:34,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 09:03:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-10-28 09:03:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 09:03:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2020-10-28 09:03:34,107 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 101 [2020-10-28 09:03:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:34,108 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2020-10-28 09:03:34,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:03:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2020-10-28 09:03:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 09:03:34,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:34,109 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:34,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:03:34,110 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash 604213818, now seen corresponding path program 10 times [2020-10-28 09:03:34,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:34,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52449909] [2020-10-28 09:03:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:39,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 09:03:39,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:03:39,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:39,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:03:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 09:03:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:03:39,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:39,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:39,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:39,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:39,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:39,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-10-28 09:03:39,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52449909] [2020-10-28 09:03:39,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:39,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:03:39,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792408099] [2020-10-28 09:03:39,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:03:39,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:39,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:03:39,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:03:39,366 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 14 states. [2020-10-28 09:03:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:39,749 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2020-10-28 09:03:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:03:39,750 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 109 [2020-10-28 09:03:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:39,751 INFO L225 Difference]: With dead ends: 219 [2020-10-28 09:03:39,751 INFO L226 Difference]: Without dead ends: 122 [2020-10-28 09:03:39,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:03:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-28 09:03:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-28 09:03:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-28 09:03:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2020-10-28 09:03:39,767 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 109 [2020-10-28 09:03:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:39,768 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2020-10-28 09:03:39,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:03:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2020-10-28 09:03:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 09:03:39,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:39,772 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:39,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:03:39,773 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:39,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1606542666, now seen corresponding path program 11 times [2020-10-28 09:03:39,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:39,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98038877] [2020-10-28 09:03:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:39,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:39,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:40,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:43,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:44,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:44,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 09:03:44,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:44,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:03:44,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:44,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:03:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 09:03:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 09:03:44,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:45,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:45,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:45,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:45,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:45,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:45,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-28 09:03:45,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98038877] [2020-10-28 09:03:45,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:45,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:03:45,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677635513] [2020-10-28 09:03:45,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:03:45,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:45,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:03:45,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:03:45,058 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 15 states. [2020-10-28 09:03:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:45,491 INFO L93 Difference]: Finished difference Result 234 states and 257 transitions. [2020-10-28 09:03:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:03:45,491 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 117 [2020-10-28 09:03:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:45,493 INFO L225 Difference]: With dead ends: 234 [2020-10-28 09:03:45,493 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 09:03:45,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:03:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 09:03:45,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-28 09:03:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 09:03:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2020-10-28 09:03:45,503 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 117 [2020-10-28 09:03:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:45,504 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2020-10-28 09:03:45,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:03:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2020-10-28 09:03:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 09:03:45,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:45,505 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:45,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:03:45,506 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:45,506 INFO L82 PathProgramCache]: Analyzing trace with hash 343749306, now seen corresponding path program 12 times [2020-10-28 09:03:45,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:45,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713679338] [2020-10-28 09:03:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:45,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:45,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:03:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:50,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:50,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:50,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:50,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-28 09:03:50,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713679338] [2020-10-28 09:03:50,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:50,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:03:50,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578717659] [2020-10-28 09:03:50,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:03:50,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:03:50,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:03:50,792 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 16 states. [2020-10-28 09:03:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:51,251 INFO L93 Difference]: Finished difference Result 249 states and 272 transitions. [2020-10-28 09:03:51,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:03:51,252 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 125 [2020-10-28 09:03:51,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:51,253 INFO L225 Difference]: With dead ends: 249 [2020-10-28 09:03:51,253 INFO L226 Difference]: Without dead ends: 138 [2020-10-28 09:03:51,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:03:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-28 09:03:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-28 09:03:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 09:03:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2020-10-28 09:03:51,263 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 125 [2020-10-28 09:03:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:51,263 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2020-10-28 09:03:51,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:03:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2020-10-28 09:03:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 09:03:51,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:51,265 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:51,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:03:51,266 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:51,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:51,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1038495542, now seen corresponding path program 13 times [2020-10-28 09:03:51,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:51,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248321680] [2020-10-28 09:03:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:51,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:51,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:56,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 09:03:56,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-28 09:03:56,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:56,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:03:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 09:03:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:03:56,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:56,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:56,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:56,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:56,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:56,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2020-10-28 09:03:56,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248321680] [2020-10-28 09:03:56,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:56,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:03:56,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396566988] [2020-10-28 09:03:56,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:03:56,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:56,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:03:56,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:03:56,661 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand 17 states. [2020-10-28 09:03:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:57,154 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2020-10-28 09:03:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:03:57,154 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 133 [2020-10-28 09:03:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:57,156 INFO L225 Difference]: With dead ends: 264 [2020-10-28 09:03:57,156 INFO L226 Difference]: Without dead ends: 146 [2020-10-28 09:03:57,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:03:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-28 09:03:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-28 09:03:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-28 09:03:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2020-10-28 09:03:57,173 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 133 [2020-10-28 09:03:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:57,173 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2020-10-28 09:03:57,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:03:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2020-10-28 09:03:57,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 09:03:57,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:57,175 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:57,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:03:57,176 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:57,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1150733510, now seen corresponding path program 14 times [2020-10-28 09:03:57,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:57,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107221117] [2020-10-28 09:03:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:02,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 09:04:02,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:04:02,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:02,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:04:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:04:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:04:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:02,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:02,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:02,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:02,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:02,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-28 09:04:02,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107221117] [2020-10-28 09:04:02,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:02,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:04:02,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348853125] [2020-10-28 09:04:02,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:04:02,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:02,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:04:02,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:04:02,514 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 18 states. [2020-10-28 09:04:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:03,035 INFO L93 Difference]: Finished difference Result 279 states and 302 transitions. [2020-10-28 09:04:03,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:04:03,036 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-10-28 09:04:03,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:03,037 INFO L225 Difference]: With dead ends: 279 [2020-10-28 09:04:03,037 INFO L226 Difference]: Without dead ends: 154 [2020-10-28 09:04:03,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:04:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-28 09:04:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-28 09:04:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 09:04:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2020-10-28 09:04:03,047 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 141 [2020-10-28 09:04:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:03,048 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2020-10-28 09:04:03,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:04:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2020-10-28 09:04:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 09:04:03,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:03,050 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:03,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:04:03,050 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:03,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2102879158, now seen corresponding path program 15 times [2020-10-28 09:04:03,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:03,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770700456] [2020-10-28 09:04:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:08,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 09:04:08,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:04:08,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:08,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:04:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:04:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:04:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:08,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:08,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:08,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-28 09:04:08,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770700456] [2020-10-28 09:04:08,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:08,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:04:08,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066372141] [2020-10-28 09:04:08,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:04:08,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:08,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:04:08,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:04:08,401 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand 19 states. [2020-10-28 09:04:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:08,954 INFO L93 Difference]: Finished difference Result 294 states and 317 transitions. [2020-10-28 09:04:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:04:08,954 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 149 [2020-10-28 09:04:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:08,955 INFO L225 Difference]: With dead ends: 294 [2020-10-28 09:04:08,956 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 09:04:08,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:04:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 09:04:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-28 09:04:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-28 09:04:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 170 transitions. [2020-10-28 09:04:08,966 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 170 transitions. Word has length 149 [2020-10-28 09:04:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:08,967 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 170 transitions. [2020-10-28 09:04:08,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:04:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 170 transitions. [2020-10-28 09:04:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 09:04:08,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:08,969 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:08,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:04:08,969 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:08,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:08,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2108134330, now seen corresponding path program 16 times [2020-10-28 09:04:08,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:08,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160715930] [2020-10-28 09:04:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:09,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:04:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:14,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:14,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:14,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:14,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:14,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:14,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2020-10-28 09:04:14,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160715930] [2020-10-28 09:04:14,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:14,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:04:14,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840714773] [2020-10-28 09:04:14,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:04:14,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:14,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:04:14,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:04:14,379 INFO L87 Difference]: Start difference. First operand 162 states and 170 transitions. Second operand 20 states. [2020-10-28 09:04:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:14,893 INFO L93 Difference]: Finished difference Result 309 states and 332 transitions. [2020-10-28 09:04:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:04:14,894 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 157 [2020-10-28 09:04:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:14,895 INFO L225 Difference]: With dead ends: 309 [2020-10-28 09:04:14,896 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 09:04:14,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:04:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 09:04:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-28 09:04:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 09:04:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2020-10-28 09:04:14,913 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 157 [2020-10-28 09:04:14,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:14,914 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2020-10-28 09:04:14,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:04:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2020-10-28 09:04:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 09:04:14,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:14,916 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:14,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:04:14,916 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:14,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:14,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1003374538, now seen corresponding path program 17 times [2020-10-28 09:04:14,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:14,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670650986] [2020-10-28 09:04:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:15,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:15,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:19,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 09:04:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:04:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:19,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:04:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 09:04:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:04:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:20,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:20,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:20,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:20,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2020-10-28 09:04:20,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670650986] [2020-10-28 09:04:20,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:20,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:04:20,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883209634] [2020-10-28 09:04:20,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:04:20,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:20,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:04:20,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:04:20,354 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 21 states. [2020-10-28 09:04:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:20,914 INFO L93 Difference]: Finished difference Result 324 states and 347 transitions. [2020-10-28 09:04:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:04:20,914 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 165 [2020-10-28 09:04:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:20,916 INFO L225 Difference]: With dead ends: 324 [2020-10-28 09:04:20,916 INFO L226 Difference]: Without dead ends: 178 [2020-10-28 09:04:20,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:04:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-28 09:04:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-28 09:04:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:04:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2020-10-28 09:04:20,933 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 165 [2020-10-28 09:04:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:20,933 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2020-10-28 09:04:20,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:04:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2020-10-28 09:04:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 09:04:20,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:20,935 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:20,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:04:20,936 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:20,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1108890682, now seen corresponding path program 18 times [2020-10-28 09:04:20,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:20,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628237112] [2020-10-28 09:04:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:26,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 09:04:26,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 09:04:26,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:26,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:04:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 09:04:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:04:26,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:26,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2020-10-28 09:04:26,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628237112] [2020-10-28 09:04:26,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:26,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:04:26,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637194808] [2020-10-28 09:04:26,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:04:26,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:26,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:04:26,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:04:26,403 INFO L87 Difference]: Start difference. First operand 178 states and 186 transitions. Second operand 22 states. [2020-10-28 09:04:26,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:26,936 INFO L93 Difference]: Finished difference Result 339 states and 362 transitions. [2020-10-28 09:04:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:04:26,937 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 173 [2020-10-28 09:04:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:26,939 INFO L225 Difference]: With dead ends: 339 [2020-10-28 09:04:26,939 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 09:04:26,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:04:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 09:04:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-28 09:04:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-28 09:04:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 194 transitions. [2020-10-28 09:04:26,951 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 194 transitions. Word has length 173 [2020-10-28 09:04:26,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:26,951 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 194 transitions. [2020-10-28 09:04:26,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:04:26,951 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 194 transitions. [2020-10-28 09:04:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-28 09:04:26,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:26,954 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:26,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:04:26,954 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:26,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:26,954 INFO L82 PathProgramCache]: Analyzing trace with hash 370486454, now seen corresponding path program 19 times [2020-10-28 09:04:26,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:26,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214504791] [2020-10-28 09:04:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:32,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 09:04:32,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:04:32,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:32,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:04:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 09:04:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:04:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:32,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:32,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:32,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:32,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:32,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:32,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2020-10-28 09:04:32,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214504791] [2020-10-28 09:04:32,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:32,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:04:32,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83524096] [2020-10-28 09:04:32,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:04:32,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:32,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:04:32,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:04:32,471 INFO L87 Difference]: Start difference. First operand 186 states and 194 transitions. Second operand 23 states. [2020-10-28 09:04:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:33,010 INFO L93 Difference]: Finished difference Result 354 states and 377 transitions. [2020-10-28 09:04:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:04:33,011 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 181 [2020-10-28 09:04:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:33,012 INFO L225 Difference]: With dead ends: 354 [2020-10-28 09:04:33,012 INFO L226 Difference]: Without dead ends: 194 [2020-10-28 09:04:33,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:04:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-28 09:04:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-28 09:04:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-28 09:04:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-10-28 09:04:33,027 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 181 [2020-10-28 09:04:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:33,028 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-10-28 09:04:33,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:04:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-10-28 09:04:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 09:04:33,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:33,031 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:33,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:04:33,031 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:33,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1906013370, now seen corresponding path program 20 times [2020-10-28 09:04:33,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:33,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636270126] [2020-10-28 09:04:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:38,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 09:04:38,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 09:04:38,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:38,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:04:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 09:04:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:04:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:38,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2020-10-28 09:04:38,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636270126] [2020-10-28 09:04:38,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:38,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:04:38,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125530030] [2020-10-28 09:04:38,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:04:38,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:38,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:04:38,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:04:38,587 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 24 states. [2020-10-28 09:04:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:39,205 INFO L93 Difference]: Finished difference Result 369 states and 392 transitions. [2020-10-28 09:04:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:04:39,209 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 189 [2020-10-28 09:04:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:39,211 INFO L225 Difference]: With dead ends: 369 [2020-10-28 09:04:39,211 INFO L226 Difference]: Without dead ends: 202 [2020-10-28 09:04:39,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:04:39,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-28 09:04:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-28 09:04:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-28 09:04:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2020-10-28 09:04:39,233 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 189 [2020-10-28 09:04:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:39,234 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2020-10-28 09:04:39,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:04:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2020-10-28 09:04:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-28 09:04:39,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:39,235 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:39,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:04:39,236 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:39,236 INFO L82 PathProgramCache]: Analyzing trace with hash 346145078, now seen corresponding path program 21 times [2020-10-28 09:04:39,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:39,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009654827] [2020-10-28 09:04:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 09:04:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:04:44,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:44,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:44,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:44,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:44,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:44,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:44,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:44,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:44,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:44,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1617 trivial. 0 not checked. [2020-10-28 09:04:44,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009654827] [2020-10-28 09:04:44,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:44,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:04:44,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964942135] [2020-10-28 09:04:44,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:04:44,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:44,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:04:44,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:04:44,831 INFO L87 Difference]: Start difference. First operand 202 states and 210 transitions. Second operand 25 states. [2020-10-28 09:04:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:45,484 INFO L93 Difference]: Finished difference Result 384 states and 407 transitions. [2020-10-28 09:04:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:04:45,484 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 197 [2020-10-28 09:04:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:45,485 INFO L225 Difference]: With dead ends: 384 [2020-10-28 09:04:45,486 INFO L226 Difference]: Without dead ends: 210 [2020-10-28 09:04:45,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:04:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-28 09:04:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-10-28 09:04:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-28 09:04:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 218 transitions. [2020-10-28 09:04:45,497 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 218 transitions. Word has length 197 [2020-10-28 09:04:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:45,498 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 218 transitions. [2020-10-28 09:04:45,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:04:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 218 transitions. [2020-10-28 09:04:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-28 09:04:45,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:45,499 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:45,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:04:45,500 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash -149883590, now seen corresponding path program 22 times [2020-10-28 09:04:45,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:45,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858936902] [2020-10-28 09:04:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:45,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:46,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:46,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 09:04:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:04:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:51,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:51,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:51,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:51,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:51,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2020-10-28 09:04:51,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858936902] [2020-10-28 09:04:51,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:51,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:04:51,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938830552] [2020-10-28 09:04:51,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:04:51,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:51,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:04:51,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:04:51,117 INFO L87 Difference]: Start difference. First operand 210 states and 218 transitions. Second operand 26 states. [2020-10-28 09:04:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:51,746 INFO L93 Difference]: Finished difference Result 399 states and 422 transitions. [2020-10-28 09:04:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:04:51,747 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 205 [2020-10-28 09:04:51,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:51,749 INFO L225 Difference]: With dead ends: 399 [2020-10-28 09:04:51,749 INFO L226 Difference]: Without dead ends: 218 [2020-10-28 09:04:51,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:04:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-28 09:04:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-28 09:04:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-28 09:04:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2020-10-28 09:04:51,761 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 205 [2020-10-28 09:04:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:51,761 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2020-10-28 09:04:51,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:04:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2020-10-28 09:04:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 09:04:51,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:51,763 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:51,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:04:51,763 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:51,764 INFO L82 PathProgramCache]: Analyzing trace with hash -8948298, now seen corresponding path program 23 times [2020-10-28 09:04:51,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:51,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181891808] [2020-10-28 09:04:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:52,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:56,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 09:04:56,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 09:04:56,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:56,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:04:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 09:04:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:04:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:57,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:57,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:57,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:04:57,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:57,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:57,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:57,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:57,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:57,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1932 trivial. 0 not checked. [2020-10-28 09:04:57,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181891808] [2020-10-28 09:04:57,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:57,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:04:57,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185996145] [2020-10-28 09:04:57,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:04:57,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:57,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:04:57,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:04:57,560 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand 27 states. [2020-10-28 09:04:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:58,179 INFO L93 Difference]: Finished difference Result 414 states and 437 transitions. [2020-10-28 09:04:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:04:58,179 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 213 [2020-10-28 09:04:58,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:58,182 INFO L225 Difference]: With dead ends: 414 [2020-10-28 09:04:58,182 INFO L226 Difference]: Without dead ends: 226 [2020-10-28 09:04:58,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:04:58,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-28 09:04:58,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-28 09:04:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-28 09:04:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 234 transitions. [2020-10-28 09:04:58,194 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 234 transitions. Word has length 213 [2020-10-28 09:04:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:58,194 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 234 transitions. [2020-10-28 09:04:58,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:04:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 234 transitions. [2020-10-28 09:04:58,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-28 09:04:58,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:58,196 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:58,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:04:58,196 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:58,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1062786490, now seen corresponding path program 24 times [2020-10-28 09:04:58,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:58,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195328421] [2020-10-28 09:04:58,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:03,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:03,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 09:05:03,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 09:05:03,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:03,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:05:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:05:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:05:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:03,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:03,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:03,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:03,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:05:03,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:04,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:04,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2020-10-28 09:05:04,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195328421] [2020-10-28 09:05:04,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:04,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:05:04,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051653779] [2020-10-28 09:05:04,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:05:04,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:04,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:05:04,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:05:04,044 INFO L87 Difference]: Start difference. First operand 226 states and 234 transitions. Second operand 28 states. [2020-10-28 09:05:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:04,730 INFO L93 Difference]: Finished difference Result 429 states and 452 transitions. [2020-10-28 09:05:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:05:04,731 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 221 [2020-10-28 09:05:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:04,733 INFO L225 Difference]: With dead ends: 429 [2020-10-28 09:05:04,733 INFO L226 Difference]: Without dead ends: 234 [2020-10-28 09:05:04,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:05:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-28 09:05:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-28 09:05:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-28 09:05:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 242 transitions. [2020-10-28 09:05:04,744 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 242 transitions. Word has length 221 [2020-10-28 09:05:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:04,744 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 242 transitions. [2020-10-28 09:05:04,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:05:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 242 transitions. [2020-10-28 09:05:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-28 09:05:04,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:04,746 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:04,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:05:04,747 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1271510474, now seen corresponding path program 25 times [2020-10-28 09:05:04,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:04,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208522860] [2020-10-28 09:05:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:09,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:09,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-28 09:05:09,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:05:09,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:09,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:05:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 09:05:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 09:05:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:10,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:10,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:10,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:10,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:10,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2600 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2020-10-28 09:05:10,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208522860] [2020-10-28 09:05:10,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:10,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:05:10,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616743534] [2020-10-28 09:05:10,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:05:10,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:10,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:05:10,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:05:10,437 INFO L87 Difference]: Start difference. First operand 234 states and 242 transitions. Second operand 29 states. [2020-10-28 09:05:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:11,159 INFO L93 Difference]: Finished difference Result 444 states and 467 transitions. [2020-10-28 09:05:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:05:11,159 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 229 [2020-10-28 09:05:11,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:11,163 INFO L225 Difference]: With dead ends: 444 [2020-10-28 09:05:11,163 INFO L226 Difference]: Without dead ends: 242 [2020-10-28 09:05:11,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:05:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-28 09:05:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-28 09:05:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-28 09:05:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2020-10-28 09:05:11,175 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 229 [2020-10-28 09:05:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:11,176 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2020-10-28 09:05:11,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:05:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2020-10-28 09:05:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 09:05:11,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:11,178 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:11,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:05:11,178 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:11,178 INFO L82 PathProgramCache]: Analyzing trace with hash 961746490, now seen corresponding path program 26 times [2020-10-28 09:05:11,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:11,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885589278] [2020-10-28 09:05:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:11,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:11,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:11,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:16,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:16,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 09:05:16,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:05:16,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:16,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:05:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-28 09:05:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:05:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:16,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:16,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:16,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:16,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:05:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:16,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2808 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2457 trivial. 0 not checked. [2020-10-28 09:05:16,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885589278] [2020-10-28 09:05:16,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:16,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:05:16,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956546832] [2020-10-28 09:05:16,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:05:16,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:16,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:05:16,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:05:16,992 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand 30 states. [2020-10-28 09:05:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:17,780 INFO L93 Difference]: Finished difference Result 459 states and 482 transitions. [2020-10-28 09:05:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:05:17,781 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 237 [2020-10-28 09:05:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:17,782 INFO L225 Difference]: With dead ends: 459 [2020-10-28 09:05:17,782 INFO L226 Difference]: Without dead ends: 250 [2020-10-28 09:05:17,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:05:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-28 09:05:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-10-28 09:05:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-28 09:05:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 258 transitions. [2020-10-28 09:05:17,795 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 258 transitions. Word has length 237 [2020-10-28 09:05:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:17,795 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 258 transitions. [2020-10-28 09:05:17,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:05:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 258 transitions. [2020-10-28 09:05:17,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-28 09:05:17,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:17,798 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:17,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:05:17,798 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:17,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1367458122, now seen corresponding path program 27 times [2020-10-28 09:05:17,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:17,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952549542] [2020-10-28 09:05:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:18,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:18,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:22,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 09:05:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 09:05:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:22,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:05:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 09:05:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:05:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:23,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:23,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:23,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:23,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:05:23,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:23,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:23,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2646 trivial. 0 not checked. [2020-10-28 09:05:23,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952549542] [2020-10-28 09:05:23,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:23,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:05:23,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150351172] [2020-10-28 09:05:23,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:05:23,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:23,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:05:23,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:05:23,680 INFO L87 Difference]: Start difference. First operand 250 states and 258 transitions. Second operand 31 states. [2020-10-28 09:05:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:24,462 INFO L93 Difference]: Finished difference Result 474 states and 497 transitions. [2020-10-28 09:05:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:05:24,463 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 245 [2020-10-28 09:05:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:24,465 INFO L225 Difference]: With dead ends: 474 [2020-10-28 09:05:24,465 INFO L226 Difference]: Without dead ends: 258 [2020-10-28 09:05:24,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:05:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-28 09:05:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-10-28 09:05:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-28 09:05:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 266 transitions. [2020-10-28 09:05:24,480 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 266 transitions. Word has length 245 [2020-10-28 09:05:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:24,480 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 266 transitions. [2020-10-28 09:05:24,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:05:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 266 transitions. [2020-10-28 09:05:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 09:05:24,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:24,482 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:24,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:05:24,482 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1440724666, now seen corresponding path program 28 times [2020-10-28 09:05:24,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:24,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811216164] [2020-10-28 09:05:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:24,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:05:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:05:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:30,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:30,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:30,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:30,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:30,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:30,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:30,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3248 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 2842 trivial. 0 not checked. [2020-10-28 09:05:30,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811216164] [2020-10-28 09:05:30,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:30,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:05:30,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180879817] [2020-10-28 09:05:30,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:05:30,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:30,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:05:30,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:05:30,365 INFO L87 Difference]: Start difference. First operand 258 states and 266 transitions. Second operand 32 states. [2020-10-28 09:05:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:31,088 INFO L93 Difference]: Finished difference Result 489 states and 512 transitions. [2020-10-28 09:05:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:05:31,088 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 253 [2020-10-28 09:05:31,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:31,090 INFO L225 Difference]: With dead ends: 489 [2020-10-28 09:05:31,090 INFO L226 Difference]: Without dead ends: 266 [2020-10-28 09:05:31,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:05:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-28 09:05:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-28 09:05:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-28 09:05:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 274 transitions. [2020-10-28 09:05:31,103 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 274 transitions. Word has length 253 [2020-10-28 09:05:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:31,103 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 274 transitions. [2020-10-28 09:05:31,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:05:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 274 transitions. [2020-10-28 09:05:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 09:05:31,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:31,105 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:31,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:05:31,105 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:31,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:31,106 INFO L82 PathProgramCache]: Analyzing trace with hash 133124918, now seen corresponding path program 29 times [2020-10-28 09:05:31,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:31,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598929540] [2020-10-28 09:05:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:31,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:36,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:36,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 09:05:36,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:36,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:05:36,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:36,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:36,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:05:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 09:05:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 09:05:36,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:36,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:37,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:37,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:37,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:37,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:37,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3480 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2020-10-28 09:05:37,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598929540] [2020-10-28 09:05:37,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:37,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:05:37,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554346320] [2020-10-28 09:05:37,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:05:37,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:37,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:05:37,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:05:37,039 INFO L87 Difference]: Start difference. First operand 266 states and 274 transitions. Second operand 33 states. [2020-10-28 09:05:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:37,968 INFO L93 Difference]: Finished difference Result 504 states and 527 transitions. [2020-10-28 09:05:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:05:37,971 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 261 [2020-10-28 09:05:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:37,972 INFO L225 Difference]: With dead ends: 504 [2020-10-28 09:05:37,972 INFO L226 Difference]: Without dead ends: 274 [2020-10-28 09:05:37,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:05:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-28 09:05:37,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-28 09:05:37,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-28 09:05:37,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 282 transitions. [2020-10-28 09:05:37,984 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 282 transitions. Word has length 261 [2020-10-28 09:05:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:37,984 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 282 transitions. [2020-10-28 09:05:37,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:05:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 282 transitions. [2020-10-28 09:05:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-28 09:05:37,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:37,986 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:37,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:05:37,986 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:37,987 INFO L82 PathProgramCache]: Analyzing trace with hash -2015447238, now seen corresponding path program 30 times [2020-10-28 09:05:37,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:37,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297958896] [2020-10-28 09:05:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:43,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:43,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-28 09:05:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 09:05:43,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:43,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:05:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:05:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:05:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:43,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3720 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3255 trivial. 0 not checked. [2020-10-28 09:05:43,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297958896] [2020-10-28 09:05:43,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:43,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:05:43,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848990281] [2020-10-28 09:05:43,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:05:43,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:05:43,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:05:43,980 INFO L87 Difference]: Start difference. First operand 274 states and 282 transitions. Second operand 34 states. [2020-10-28 09:05:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:44,942 INFO L93 Difference]: Finished difference Result 519 states and 542 transitions. [2020-10-28 09:05:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:05:44,943 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 269 [2020-10-28 09:05:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:44,946 INFO L225 Difference]: With dead ends: 519 [2020-10-28 09:05:44,946 INFO L226 Difference]: Without dead ends: 282 [2020-10-28 09:05:44,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:05:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-28 09:05:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-28 09:05:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-28 09:05:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 290 transitions. [2020-10-28 09:05:44,956 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 290 transitions. Word has length 269 [2020-10-28 09:05:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:44,957 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 290 transitions. [2020-10-28 09:05:44,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:05:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 290 transitions. [2020-10-28 09:05:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-28 09:05:44,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:44,959 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:44,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:05:44,959 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2015987638, now seen corresponding path program 31 times [2020-10-28 09:05:44,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:44,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533239241] [2020-10-28 09:05:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 09:05:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 09:05:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:50,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:50,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:50,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:50,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:05:50,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:50,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:50,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:50,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3968 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2020-10-28 09:05:50,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533239241] [2020-10-28 09:05:50,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:50,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:05:50,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667091625] [2020-10-28 09:05:50,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:05:50,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:50,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:05:50,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:05:50,989 INFO L87 Difference]: Start difference. First operand 282 states and 290 transitions. Second operand 35 states. [2020-10-28 09:05:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:51,954 INFO L93 Difference]: Finished difference Result 534 states and 557 transitions. [2020-10-28 09:05:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:05:51,954 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 277 [2020-10-28 09:05:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:51,956 INFO L225 Difference]: With dead ends: 534 [2020-10-28 09:05:51,956 INFO L226 Difference]: Without dead ends: 290 [2020-10-28 09:05:51,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:05:51,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-28 09:05:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2020-10-28 09:05:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-28 09:05:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 298 transitions. [2020-10-28 09:05:51,969 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 298 transitions. Word has length 277 [2020-10-28 09:05:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:51,969 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 298 transitions. [2020-10-28 09:05:51,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:05:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 298 transitions. [2020-10-28 09:05:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 09:05:51,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:51,972 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:51,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:05:51,972 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1144002490, now seen corresponding path program 32 times [2020-10-28 09:05:51,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:51,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673643893] [2020-10-28 09:05:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:52,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:52,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:57,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:05:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:58,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:58,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:58,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:58,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:58,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2020-10-28 09:05:58,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673643893] [2020-10-28 09:05:58,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:58,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:05:58,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897871490] [2020-10-28 09:05:58,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:05:58,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:58,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:05:58,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:05:58,117 INFO L87 Difference]: Start difference. First operand 290 states and 298 transitions. Second operand 36 states. [2020-10-28 09:05:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:58,969 INFO L93 Difference]: Finished difference Result 549 states and 572 transitions. [2020-10-28 09:05:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:05:58,970 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 285 [2020-10-28 09:05:58,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:58,972 INFO L225 Difference]: With dead ends: 549 [2020-10-28 09:05:58,972 INFO L226 Difference]: Without dead ends: 298 [2020-10-28 09:05:58,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:05:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-28 09:05:58,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-28 09:05:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-28 09:05:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 306 transitions. [2020-10-28 09:05:58,985 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 306 transitions. Word has length 285 [2020-10-28 09:05:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:58,985 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 306 transitions. [2020-10-28 09:05:58,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:05:58,985 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 306 transitions. [2020-10-28 09:05:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-28 09:05:58,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:58,987 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:58,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:05:58,988 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:58,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1422711862, now seen corresponding path program 33 times [2020-10-28 09:05:58,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:58,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219344933] [2020-10-28 09:05:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:59,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:59,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:00,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:04,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:04,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-28 09:06:04,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 09:06:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:04,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 09:06:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-28 09:06:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:06:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:05,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:05,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:05,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:05,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:05,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:05,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:05,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4488 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-10-28 09:06:05,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219344933] [2020-10-28 09:06:05,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:05,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-28 09:06:05,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911457223] [2020-10-28 09:06:05,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-28 09:06:05,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:05,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-28 09:06:05,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:06:05,155 INFO L87 Difference]: Start difference. First operand 298 states and 306 transitions. Second operand 37 states. [2020-10-28 09:06:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:06,119 INFO L93 Difference]: Finished difference Result 564 states and 587 transitions. [2020-10-28 09:06:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:06:06,119 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 293 [2020-10-28 09:06:06,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:06,121 INFO L225 Difference]: With dead ends: 564 [2020-10-28 09:06:06,121 INFO L226 Difference]: Without dead ends: 306 [2020-10-28 09:06:06,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:06:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-28 09:06:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-10-28 09:06:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-28 09:06:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 314 transitions. [2020-10-28 09:06:06,133 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 314 transitions. Word has length 293 [2020-10-28 09:06:06,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:06,133 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 314 transitions. [2020-10-28 09:06:06,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-28 09:06:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 314 transitions. [2020-10-28 09:06:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-28 09:06:06,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:06,136 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:06,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:06:06,136 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:06,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2118920134, now seen corresponding path program 34 times [2020-10-28 09:06:06,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:06,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376261890] [2020-10-28 09:06:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:11,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-28 09:06:11,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:06:11,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:11,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 09:06:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:06:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:06:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:12,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:12,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:12,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:12,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:12,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:12,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2020-10-28 09:06:12,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376261890] [2020-10-28 09:06:12,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:12,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-28 09:06:12,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517933457] [2020-10-28 09:06:12,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-28 09:06:12,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:12,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-28 09:06:12,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:06:12,329 INFO L87 Difference]: Start difference. First operand 306 states and 314 transitions. Second operand 38 states. [2020-10-28 09:06:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:13,348 INFO L93 Difference]: Finished difference Result 579 states and 602 transitions. [2020-10-28 09:06:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:06:13,349 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 301 [2020-10-28 09:06:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:13,351 INFO L225 Difference]: With dead ends: 579 [2020-10-28 09:06:13,351 INFO L226 Difference]: Without dead ends: 314 [2020-10-28 09:06:13,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:06:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-28 09:06:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2020-10-28 09:06:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-28 09:06:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 322 transitions. [2020-10-28 09:06:13,360 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 322 transitions. Word has length 301 [2020-10-28 09:06:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:13,361 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 322 transitions. [2020-10-28 09:06:13,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-28 09:06:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 322 transitions. [2020-10-28 09:06:13,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 09:06:13,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:13,363 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:13,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:06:13,363 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:13,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1854320458, now seen corresponding path program 35 times [2020-10-28 09:06:13,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:13,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823997396] [2020-10-28 09:06:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:18,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 09:06:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:19,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:19,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:19,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:19,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:19,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2020-10-28 09:06:19,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823997396] [2020-10-28 09:06:19,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:19,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-28 09:06:19,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8126570] [2020-10-28 09:06:19,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-28 09:06:19,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:19,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-28 09:06:19,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:06:19,664 INFO L87 Difference]: Start difference. First operand 314 states and 322 transitions. Second operand 39 states. [2020-10-28 09:06:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:20,632 INFO L93 Difference]: Finished difference Result 594 states and 617 transitions. [2020-10-28 09:06:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 09:06:20,633 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 309 [2020-10-28 09:06:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:20,635 INFO L225 Difference]: With dead ends: 594 [2020-10-28 09:06:20,635 INFO L226 Difference]: Without dead ends: 322 [2020-10-28 09:06:20,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:06:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-28 09:06:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-10-28 09:06:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-28 09:06:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 330 transitions. [2020-10-28 09:06:20,648 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 330 transitions. Word has length 309 [2020-10-28 09:06:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:20,649 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 330 transitions. [2020-10-28 09:06:20,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-28 09:06:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 330 transitions. [2020-10-28 09:06:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 09:06:20,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:20,652 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:20,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:06:20,652 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:20,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1186334534, now seen corresponding path program 36 times [2020-10-28 09:06:20,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:20,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021609826] [2020-10-28 09:06:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:21,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:21,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:25,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:25,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 09:06:25,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:06:25,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:25,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-28 09:06:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 09:06:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:06:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0