/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=DEEPEST --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/eca-rers2012/Problem17_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:55:11,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:55:11,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:55:11,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:55:11,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:55:11,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:55:11,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:55:11,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:55:11,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:55:11,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:55:11,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:55:11,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:55:11,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:55:11,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:55:11,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:55:11,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:55:11,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:55:11,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:55:11,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:55:11,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:55:11,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:55:11,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:55:11,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:55:11,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:55:11,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:55:11,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:55:11,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:55:11,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:55:11,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:55:11,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:55:11,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:55:11,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:55:11,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:55:11,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:55:11,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:55:11,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:55:11,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:55:11,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:55:11,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:55:11,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:55:11,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:55:11,611 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 [2020-10-27 18:55:11,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:55:11,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:55:11,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:55:11,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:55:11,643 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:55:11,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:55:11,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:55:11,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:55:11,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:55:11,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:55:11,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:55:11,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:55:11,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:55:11,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:55:11,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:55:11,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:55:11,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:55:11,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:55:11,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:55:11,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:55:11,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:55:11,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:55:11,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:55:11,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:55:11,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:55:11,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:55:11,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:55:11,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:55:11,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:55:11,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:55:12,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:55:12,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:55:12,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:55:12,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:55:12,109 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:55:12,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2020-10-27 18:55:12,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9792e352e/1aea32154e8a479592992f2c10022046/FLAG75dec2e24 [2020-10-27 18:55:13,165 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:55:13,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2020-10-27 18:55:13,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9792e352e/1aea32154e8a479592992f2c10022046/FLAG75dec2e24 [2020-10-27 18:55:13,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9792e352e/1aea32154e8a479592992f2c10022046 [2020-10-27 18:55:13,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:55:13,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:55:13,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:55:13,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:55:13,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:55:13,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:55:13" (1/1) ... [2020-10-27 18:55:13,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c1687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:13, skipping insertion in model container [2020-10-27 18:55:13,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:55:13" (1/1) ... [2020-10-27 18:55:13,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:55:13,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:55:14,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:55:14,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:55:15,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:55:15,412 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:55:15,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15 WrapperNode [2020-10-27 18:55:15,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:55:15,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:55:15,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:55:15,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:55:15,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (1/1) ... [2020-10-27 18:55:15,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (1/1) ... [2020-10-27 18:55:15,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (1/1) ... [2020-10-27 18:55:15,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (1/1) ... [2020-10-27 18:55:15,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (1/1) ... [2020-10-27 18:55:15,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (1/1) ... [2020-10-27 18:55:15,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (1/1) ... [2020-10-27 18:55:15,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:55:15,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:55:15,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:55:15,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:55:15,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (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 [2020-10-27 18:55:15,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:55:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:55:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:55:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:55:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:55:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:55:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:55:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:55:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:55:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:55:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:55:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:55:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:55:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:55:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:55:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:55:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:55:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:55:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:55:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:55:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:55:24,863 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:55:24,864 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:55:24,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:55:24 BoogieIcfgContainer [2020-10-27 18:55:24,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:55:24,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:55:24,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:55:24,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:55:24,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:55:13" (1/3) ... [2020-10-27 18:55:24,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799cc641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:55:24, skipping insertion in model container [2020-10-27 18:55:24,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:55:15" (2/3) ... [2020-10-27 18:55:24,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799cc641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:55:24, skipping insertion in model container [2020-10-27 18:55:24,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:55:24" (3/3) ... [2020-10-27 18:55:24,884 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label29.c [2020-10-27 18:55:24,899 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:55:24,906 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:55:24,923 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:55:24,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:55:24,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:55:24,982 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:55:24,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:55:24,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:55:24,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:55:24,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:55:24,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:55:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 18:55:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 18:55:25,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:55:25,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:55:25,058 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:55:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:55:25,068 INFO L82 PathProgramCache]: Analyzing trace with hash 393174018, now seen corresponding path program 1 times [2020-10-27 18:55:25,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:55:25,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50219222] [2020-10-27 18:55:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:55:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:26,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:26,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:55:26,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-27 18:55:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:55:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:55:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:55:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 18:55:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:55:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:26,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:26,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:55:26,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:55:26,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:55:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:55:26,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:55:26,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50219222] [2020-10-27 18:55:26,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:55:26,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:55:26,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994272305] [2020-10-27 18:55:26,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:55:26,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:55:26,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:55:26,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:55:26,460 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 18:55:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:55:37,955 INFO L93 Difference]: Finished difference Result 1721 states and 3132 transitions. [2020-10-27 18:55:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:55:37,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-27 18:55:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:55:37,983 INFO L225 Difference]: With dead ends: 1721 [2020-10-27 18:55:37,983 INFO L226 Difference]: Without dead ends: 1035 [2020-10-27 18:55:37,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:55:38,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-27 18:55:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1009. [2020-10-27 18:55:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-27 18:55:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1706 transitions. [2020-10-27 18:55:38,124 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1706 transitions. Word has length 72 [2020-10-27 18:55:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:55:38,125 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1706 transitions. [2020-10-27 18:55:38,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:55:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1706 transitions. [2020-10-27 18:55:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 18:55:38,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:55:38,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:55:38,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:55:38,134 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:55:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:55:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1751403066, now seen corresponding path program 1 times [2020-10-27 18:55:38,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:55:38,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732016885] [2020-10-27 18:55:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:55:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:38,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 18:55:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:55:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1412 [2020-10-27 18:55:39,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:55:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:55:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:55:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:55:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:55:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:39,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:39,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:55:39,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:55:39,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:55:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:55:39,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:39,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:55:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:39,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:55:39,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 18:55:39,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:55:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:55:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:55:40,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732016885] [2020-10-27 18:55:40,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:55:40,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:55:40,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706411604] [2020-10-27 18:55:40,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:55:40,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:55:40,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:55:40,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:55:40,043 INFO L87 Difference]: Start difference. First operand 1009 states and 1706 transitions. Second operand 5 states. [2020-10-27 18:55:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:55:53,628 INFO L93 Difference]: Finished difference Result 2917 states and 4999 transitions. [2020-10-27 18:55:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:55:53,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-27 18:55:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:55:53,648 INFO L225 Difference]: With dead ends: 2917 [2020-10-27 18:55:53,649 INFO L226 Difference]: Without dead ends: 1914 [2020-10-27 18:55:53,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:55:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-27 18:55:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1900. [2020-10-27 18:55:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1900 states. [2020-10-27 18:55:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2959 transitions. [2020-10-27 18:55:53,761 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2959 transitions. Word has length 141 [2020-10-27 18:55:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:55:53,764 INFO L481 AbstractCegarLoop]: Abstraction has 1900 states and 2959 transitions. [2020-10-27 18:55:53,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:55:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2959 transitions. [2020-10-27 18:55:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 18:55:53,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:55:53,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:55:53,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:55:53,777 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:55:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:55:53,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1420523418, now seen corresponding path program 1 times [2020-10-27 18:55:53,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:55:53,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993468970] [2020-10-27 18:55:53,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:55:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:56,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:56,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:56,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 18:55:56,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:55:56,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2589 [2020-10-27 18:55:56,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:56,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:55:56,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:55:56,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:55:56,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:56,631 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:55:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:55:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:56,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:56,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:55:56,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:55:56,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:55:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:55:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:56,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:55:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:56,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:56,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:55:56,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:56,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 18:55:56,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:56,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:55:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:55:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:55:56,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993468970] [2020-10-27 18:55:56,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:55:56,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:55:56,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475997249] [2020-10-27 18:55:56,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:55:56,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:55:56,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:55:56,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:55:56,907 INFO L87 Difference]: Start difference. First operand 1900 states and 2959 transitions. Second operand 5 states. [2020-10-27 18:56:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:56:08,867 INFO L93 Difference]: Finished difference Result 5557 states and 8819 transitions. [2020-10-27 18:56:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:56:08,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 18:56:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:56:08,897 INFO L225 Difference]: With dead ends: 5557 [2020-10-27 18:56:08,897 INFO L226 Difference]: Without dead ends: 3663 [2020-10-27 18:56:08,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:56:08,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2020-10-27 18:56:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3655. [2020-10-27 18:56:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3655 states. [2020-10-27 18:56:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5033 transitions. [2020-10-27 18:56:09,024 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5033 transitions. Word has length 147 [2020-10-27 18:56:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:56:09,025 INFO L481 AbstractCegarLoop]: Abstraction has 3655 states and 5033 transitions. [2020-10-27 18:56:09,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:56:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5033 transitions. [2020-10-27 18:56:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-27 18:56:09,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:56:09,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:56:09,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:56:09,031 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:56:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:56:09,032 INFO L82 PathProgramCache]: Analyzing trace with hash 200684513, now seen corresponding path program 1 times [2020-10-27 18:56:09,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:56:09,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932575214] [2020-10-27 18:56:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:56:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:09,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:10,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:11,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:11,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 18:56:11,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:56:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2325 [2020-10-27 18:56:11,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:56:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 18:56:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:56:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:56:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:11,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:56:11,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:56:11,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:56:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:56:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:56:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:11,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:11,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:56:11,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:11,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 18:56:11,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:11,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:56:11,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:11,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 18:56:11,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:56:11,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932575214] [2020-10-27 18:56:11,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:56:11,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:56:11,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870239200] [2020-10-27 18:56:11,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:56:11,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:56:11,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:56:11,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:56:11,878 INFO L87 Difference]: Start difference. First operand 3655 states and 5033 transitions. Second operand 5 states. [2020-10-27 18:56:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:56:28,078 INFO L93 Difference]: Finished difference Result 9091 states and 12745 transitions. [2020-10-27 18:56:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:56:28,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-27 18:56:28,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:56:28,111 INFO L225 Difference]: With dead ends: 9091 [2020-10-27 18:56:28,112 INFO L226 Difference]: Without dead ends: 5442 [2020-10-27 18:56:28,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:56:28,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5442 states. [2020-10-27 18:56:28,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5442 to 5423. [2020-10-27 18:56:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5423 states. [2020-10-27 18:56:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 7273 transitions. [2020-10-27 18:56:28,285 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 7273 transitions. Word has length 205 [2020-10-27 18:56:28,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:56:28,285 INFO L481 AbstractCegarLoop]: Abstraction has 5423 states and 7273 transitions. [2020-10-27 18:56:28,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:56:28,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 7273 transitions. [2020-10-27 18:56:28,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 18:56:28,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:56:28,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:56:28,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:56:28,292 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:56:28,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:56:28,293 INFO L82 PathProgramCache]: Analyzing trace with hash -654399319, now seen corresponding path program 1 times [2020-10-27 18:56:28,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:56:28,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956849012] [2020-10-27 18:56:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:56:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:28,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:28,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:30,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:30,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 18:56:30,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:56:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2084 [2020-10-27 18:56:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:56:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 18:56:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:56:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:30,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:56:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:30,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:30,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:56:30,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:56:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:56:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:56:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:56:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:30,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:30,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:30,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 18:56:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-27 18:56:30,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:56:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 18:56:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:56:31,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956849012] [2020-10-27 18:56:31,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:56:31,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:56:31,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611802084] [2020-10-27 18:56:31,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:56:31,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:56:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:56:31,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:56:31,121 INFO L87 Difference]: Start difference. First operand 5423 states and 7273 transitions. Second operand 5 states. [2020-10-27 18:56:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:56:49,716 INFO L93 Difference]: Finished difference Result 15241 states and 20879 transitions. [2020-10-27 18:56:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:56:49,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-27 18:56:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:56:49,774 INFO L225 Difference]: With dead ends: 15241 [2020-10-27 18:56:49,774 INFO L226 Difference]: Without dead ends: 9824 [2020-10-27 18:56:49,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:56:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9824 states. [2020-10-27 18:56:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9824 to 9803. [2020-10-27 18:56:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9803 states. [2020-10-27 18:56:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9803 states to 9803 states and 12499 transitions. [2020-10-27 18:56:50,096 INFO L78 Accepts]: Start accepts. Automaton has 9803 states and 12499 transitions. Word has length 209 [2020-10-27 18:56:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:56:50,097 INFO L481 AbstractCegarLoop]: Abstraction has 9803 states and 12499 transitions. [2020-10-27 18:56:50,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:56:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 9803 states and 12499 transitions. [2020-10-27 18:56:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 18:56:50,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:56:50,105 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:56:50,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:56:50,105 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:56:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:56:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash 941404615, now seen corresponding path program 1 times [2020-10-27 18:56:50,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:56:50,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158861448] [2020-10-27 18:56:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:56:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:55,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:55,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-27 18:56:55,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:56:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 18:56:55,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 18:56:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-27 18:56:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 18:56:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:55,842 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-10-27 18:56:56,023 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-10-27 18:56:56,286 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-27 18:56:56,501 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-27 18:56:56,743 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-27 18:56:56,989 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-10-27 18:56:57,206 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-10-27 18:56:57,376 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-27 18:56:57,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:56:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:57,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:57,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:56:57,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:56:57,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:57,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:56:57,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:57,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:56:57,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:57,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:56:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:56:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:56:57,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:56:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:56:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 18:56:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:58,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:58,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:56:58,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 18:56:58,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:56:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 18:56:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 18:56:58,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158861448] [2020-10-27 18:56:58,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:56:58,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 18:56:58,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948128313] [2020-10-27 18:56:58,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 18:56:58,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:56:58,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 18:56:58,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-27 18:56:58,267 INFO L87 Difference]: Start difference. First operand 9803 states and 12499 transitions. Second operand 20 states. [2020-10-27 18:56:59,137 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 18:56:59,279 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-27 18:56:59,492 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-27 18:56:59,647 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-27 18:56:59,823 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 18:57:00,065 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 18:57:00,302 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 18:57:00,579 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 18:57:00,762 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-27 18:57:01,035 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 18:57:01,212 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 18:57:01,411 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 18:57:01,603 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-27 18:57:01,819 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 18:57:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:57:18,231 INFO L93 Difference]: Finished difference Result 20062 states and 25878 transitions. [2020-10-27 18:57:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 18:57:18,233 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 221 [2020-10-27 18:57:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:57:18,273 INFO L225 Difference]: With dead ends: 20062 [2020-10-27 18:57:18,273 INFO L226 Difference]: Without dead ends: 9375 [2020-10-27 18:57:18,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 18:57:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9375 states. [2020-10-27 18:57:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9375 to 9365. [2020-10-27 18:57:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9365 states. [2020-10-27 18:57:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9365 states to 9365 states and 11327 transitions. [2020-10-27 18:57:18,569 INFO L78 Accepts]: Start accepts. Automaton has 9365 states and 11327 transitions. Word has length 221 [2020-10-27 18:57:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:57:18,569 INFO L481 AbstractCegarLoop]: Abstraction has 9365 states and 11327 transitions. [2020-10-27 18:57:18,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 18:57:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 9365 states and 11327 transitions. [2020-10-27 18:57:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-27 18:57:18,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:57:18,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:57:18,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:57:18,578 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:57:18,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:57:18,579 INFO L82 PathProgramCache]: Analyzing trace with hash 404506128, now seen corresponding path program 1 times [2020-10-27 18:57:18,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:57:18,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806511682] [2020-10-27 18:57:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:57:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:23,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:23,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-27 18:57:23,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:57:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 18:57:23,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:57:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-27 18:57:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:57:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:23,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:57:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:23,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:23,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:57:23,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:57:23,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:57:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:57:23,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:23,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:57:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:23,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:23,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:57:23,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:23,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:57:23,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:57:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:57:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:23,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 18:57:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:23,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:24,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:24,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:57:24,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 18:57:24,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:57:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:24,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:57:24,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-27 18:57:24,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806511682] [2020-10-27 18:57:24,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:57:24,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:57:24,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721148251] [2020-10-27 18:57:24,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:57:24,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:57:24,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:57:24,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:57:24,117 INFO L87 Difference]: Start difference. First operand 9365 states and 11327 transitions. Second operand 5 states. [2020-10-27 18:57:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:57:39,022 INFO L93 Difference]: Finished difference Result 21354 states and 26410 transitions. [2020-10-27 18:57:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:57:39,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-27 18:57:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:57:39,063 INFO L225 Difference]: With dead ends: 21354 [2020-10-27 18:57:39,063 INFO L226 Difference]: Without dead ends: 11995 [2020-10-27 18:57:39,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:57:39,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11995 states. [2020-10-27 18:57:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11995 to 11548. [2020-10-27 18:57:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11548 states. [2020-10-27 18:57:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11548 states to 11548 states and 14424 transitions. [2020-10-27 18:57:39,353 INFO L78 Accepts]: Start accepts. Automaton has 11548 states and 14424 transitions. Word has length 245 [2020-10-27 18:57:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:57:39,353 INFO L481 AbstractCegarLoop]: Abstraction has 11548 states and 14424 transitions. [2020-10-27 18:57:39,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:57:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 11548 states and 14424 transitions. [2020-10-27 18:57:39,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 18:57:39,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:57:39,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:57:39,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:57:39,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:57:39,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:57:39,364 INFO L82 PathProgramCache]: Analyzing trace with hash 746161868, now seen corresponding path program 1 times [2020-10-27 18:57:39,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:57:39,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812897452] [2020-10-27 18:57:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:57:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:39,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:40,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:41,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:41,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-27 18:57:41,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:57:41,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2563 [2020-10-27 18:57:41,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:41,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:57:41,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-27 18:57:41,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 18:57:41,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:57:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:42,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:42,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:57:42,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:42,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:57:42,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:57:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:42,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:57:42,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:57:42,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:57:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:42,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:42,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:42,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:57:42,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:42,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:57:42,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:57:42,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:42,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:57:42,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:42,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 18:57:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:42,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:42,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:42,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 18:57:42,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:42,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 18:57:42,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:57:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 18:57:42,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 18:57:42,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812897452] [2020-10-27 18:57:42,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:57:42,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:57:42,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610236980] [2020-10-27 18:57:42,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:57:42,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:57:42,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:57:42,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:57:42,527 INFO L87 Difference]: Start difference. First operand 11548 states and 14424 transitions. Second operand 5 states. [2020-10-27 18:57:46,202 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 18:57:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:57:55,060 INFO L93 Difference]: Finished difference Result 23124 states and 28934 transitions. [2020-10-27 18:57:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:57:55,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-27 18:57:55,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:57:55,100 INFO L225 Difference]: With dead ends: 23124 [2020-10-27 18:57:55,100 INFO L226 Difference]: Without dead ends: 11558 [2020-10-27 18:57:55,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:57:55,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11558 states. [2020-10-27 18:57:55,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11558 to 11548. [2020-10-27 18:57:55,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11548 states. [2020-10-27 18:57:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11548 states to 11548 states and 14418 transitions. [2020-10-27 18:57:55,426 INFO L78 Accepts]: Start accepts. Automaton has 11548 states and 14418 transitions. Word has length 247 [2020-10-27 18:57:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:57:55,427 INFO L481 AbstractCegarLoop]: Abstraction has 11548 states and 14418 transitions. [2020-10-27 18:57:55,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:57:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 11548 states and 14418 transitions. [2020-10-27 18:57:55,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 18:57:55,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:57:55,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:57:55,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:57:55,436 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:57:55,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:57:55,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1131663128, now seen corresponding path program 1 times [2020-10-27 18:57:55,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:57:55,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589964866] [2020-10-27 18:57:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:57:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:55,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:00,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:00,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-27 18:58:00,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:58:00,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 18:58:00,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 18:58:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-10-27 18:58:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 18:58:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:00,799 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-10-27 18:58:00,942 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2020-10-27 18:58:01,134 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-27 18:58:01,287 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-10-27 18:58:01,425 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-10-27 18:58:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:58:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:01,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:01,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:58:01,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:58:01,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:58:01,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:58:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:58:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:58:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:58:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:01,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:01,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:58:01,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:58:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:58:01,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:58:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:58:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:58:01,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:58:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:01,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:58:01,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:58:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:58:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:58:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:58:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:58:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:58:02,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589964866] [2020-10-27 18:58:02,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:58:02,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 18:58:02,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537930388] [2020-10-27 18:58:02,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 18:58:02,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:58:02,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 18:58:02,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:58:02,104 INFO L87 Difference]: Start difference. First operand 11548 states and 14418 transitions. Second operand 11 states. [2020-10-27 18:58:04,376 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 18:58:07,658 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-27 18:58:08,102 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2020-10-27 18:58:09,112 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-27 18:58:09,615 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2020-10-27 18:58:10,137 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2020-10-27 18:58:10,383 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-27 18:58:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:58:20,160 INFO L93 Difference]: Finished difference Result 23216 states and 29037 transitions. [2020-10-27 18:58:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:58:20,167 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-27 18:58:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:58:20,210 INFO L225 Difference]: With dead ends: 23216 [2020-10-27 18:58:20,210 INFO L226 Difference]: Without dead ends: 11558 [2020-10-27 18:58:20,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2020-10-27 18:58:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11558 states. [2020-10-27 18:58:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11558 to 11548. [2020-10-27 18:58:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11548 states. [2020-10-27 18:58:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11548 states to 11548 states and 14409 transitions. [2020-10-27 18:58:20,471 INFO L78 Accepts]: Start accepts. Automaton has 11548 states and 14409 transitions. Word has length 257 [2020-10-27 18:58:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:58:20,471 INFO L481 AbstractCegarLoop]: Abstraction has 11548 states and 14409 transitions. [2020-10-27 18:58:20,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 18:58:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 11548 states and 14409 transitions. [2020-10-27 18:58:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 18:58:20,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:58:20,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:58:20,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:58:20,481 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:58:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:58:20,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1504942210, now seen corresponding path program 1 times [2020-10-27 18:58:20,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:58:20,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852556793] [2020-10-27 18:58:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:58:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:25,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:25,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:58:25,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:58:25,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:58:25,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:58:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 18:58:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 18:58:25,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:58:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:25,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:25,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:58:25,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:58:25,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:58:25,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:58:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:58:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:58:25,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:58:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:25,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:25,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 18:58:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:58:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 18:58:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:58:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 18:58:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:58:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 18:58:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:26,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:26,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 18:58:26,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:58:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 18:58:26,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:58:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:58:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 18:58:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:58:26,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852556793] [2020-10-27 18:58:26,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:58:26,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:58:26,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016452591] [2020-10-27 18:58:26,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:58:26,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:58:26,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:58:26,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:58:26,219 INFO L87 Difference]: Start difference. First operand 11548 states and 14409 transitions. Second operand 8 states. [2020-10-27 18:58:26,367 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 18:58:32,084 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-27 18:58:47,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:58:47,226 INFO L93 Difference]: Finished difference Result 24496 states and 31270 transitions. [2020-10-27 18:58:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 18:58:47,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-27 18:58:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:58:47,272 INFO L225 Difference]: With dead ends: 24496 [2020-10-27 18:58:47,272 INFO L226 Difference]: Without dead ends: 12954 [2020-10-27 18:58:47,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-27 18:58:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12954 states. [2020-10-27 18:58:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12954 to 12074. [2020-10-27 18:58:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12074 states. [2020-10-27 18:58:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12074 states to 12074 states and 14561 transitions. [2020-10-27 18:58:47,510 INFO L78 Accepts]: Start accepts. Automaton has 12074 states and 14561 transitions. Word has length 260 [2020-10-27 18:58:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:58:47,510 INFO L481 AbstractCegarLoop]: Abstraction has 12074 states and 14561 transitions. [2020-10-27 18:58:47,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:58:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 12074 states and 14561 transitions. [2020-10-27 18:58:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-27 18:58:47,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:58:47,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:58:47,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:58:47,521 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:58:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:58:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1570067464, now seen corresponding path program 1 times [2020-10-27 18:58:47,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:58:47,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896903961] [2020-10-27 18:58:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:58:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:50,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:50,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-27 18:58:50,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:58:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3085 [2020-10-27 18:58:50,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:58:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-27 18:58:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 18:58:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:58:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:50,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:50,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:58:50,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:58:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:58:50,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:50,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:58:50,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:58:50,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:58:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:58:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:51,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:51,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 18:58:51,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:58:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:58:51,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:58:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:58:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:58:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 18:58:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:51,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:51,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:58:51,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:58:51,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:58:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 18:58:51,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:58:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:58:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:58:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:58:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:58:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 18:58:51,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896903961] [2020-10-27 18:58:51,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:58:51,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:58:51,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668683991] [2020-10-27 18:58:51,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:58:51,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:58:51,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:58:51,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:58:51,304 INFO L87 Difference]: Start difference. First operand 12074 states and 14561 transitions. Second operand 5 states. [2020-10-27 18:58:55,850 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 76