/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:42:14,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:42:14,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:42:14,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:42:14,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:42:14,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:42:14,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:42:14,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:42:14,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:42:14,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:42:14,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:42:14,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:42:14,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:42:14,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:42:14,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:42:14,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:42:14,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:42:14,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:42:14,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:42:14,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:42:14,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:42:14,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:42:14,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:42:14,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:42:14,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:42:14,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:42:14,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:42:14,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:42:14,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:42:14,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:42:14,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:42:14,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:42:14,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:42:14,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:42:14,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:42:14,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:42:14,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:42:14,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:42:14,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:42:14,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:42:14,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:42:14,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:42:14,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:42:14,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:42:14,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:42:14,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:42:14,605 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:42:14,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:42:14,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:42:14,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:42:14,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:42:14,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:42:14,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:42:14,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:42:14,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:42:14,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:42:14,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:42:14,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:42:14,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:42:14,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:42:14,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:42:14,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:42:14,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:42:14,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:42:14,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:42:14,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:42:14,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:42:14,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:42:14,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:42:14,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:42:14,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:42:14,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:42:15,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:42:15,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:42:15,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:42:15,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:42:15,164 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:42:15,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label51.c [2020-10-28 12:42:15,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/099d9ebaf/e4515d19f1af45b483eb13227f138aa0/FLAG2f802e427 [2020-10-28 12:42:16,387 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:42:16,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label51.c [2020-10-28 12:42:16,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/099d9ebaf/e4515d19f1af45b483eb13227f138aa0/FLAG2f802e427 [2020-10-28 12:42:16,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/099d9ebaf/e4515d19f1af45b483eb13227f138aa0 [2020-10-28 12:42:16,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:42:16,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:42:16,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:42:16,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:42:16,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:42:16,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:42:16" (1/1) ... [2020-10-28 12:42:16,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a6a153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:16, skipping insertion in model container [2020-10-28 12:42:16,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:42:16" (1/1) ... [2020-10-28 12:42:16,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:42:17,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:42:18,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:42:18,524 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:42:19,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:42:19,397 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:42:19,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19 WrapperNode [2020-10-28 12:42:19,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:42:19,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:42:19,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:42:19,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:42:19,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (1/1) ... [2020-10-28 12:42:19,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (1/1) ... [2020-10-28 12:42:19,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (1/1) ... [2020-10-28 12:42:19,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (1/1) ... [2020-10-28 12:42:19,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (1/1) ... [2020-10-28 12:42:19,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (1/1) ... [2020-10-28 12:42:19,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (1/1) ... [2020-10-28 12:42:19,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:42:19,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:42:19,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:42:19,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:42:19,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:42:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:42:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:42:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:42:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:42:20,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:42:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:42:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:42:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:42:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:42:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:42:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:42:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:42:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:42:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:42:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:42:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:42:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:42:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:42:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:42:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:42:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:42:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:42:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:42:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:42:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:42:30,400 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:42:30,402 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:42:30,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:42:30 BoogieIcfgContainer [2020-10-28 12:42:30,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:42:30,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:42:30,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:42:30,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:42:30,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:42:16" (1/3) ... [2020-10-28 12:42:30,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602bcd94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:42:30, skipping insertion in model container [2020-10-28 12:42:30,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:42:19" (2/3) ... [2020-10-28 12:42:30,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602bcd94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:42:30, skipping insertion in model container [2020-10-28 12:42:30,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:42:30" (3/3) ... [2020-10-28 12:42:30,420 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label51.c [2020-10-28 12:42:30,434 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:42:30,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:42:30,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:42:30,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:42:30,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:42:30,506 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:42:30,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:42:30,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:42:30,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:42:30,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:42:30,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:42:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:42:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 12:42:30,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:42:30,558 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] [2020-10-28 12:42:30,558 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:42:30,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:42:30,565 INFO L82 PathProgramCache]: Analyzing trace with hash -707284782, now seen corresponding path program 1 times [2020-10-28 12:42:30,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:42:30,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675739018] [2020-10-28 12:42:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:42:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:30,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:31,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:31,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 12:42:31,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-28 12:42:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:31,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:42:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:42:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 12:42:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:42:31,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:42:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:31,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:31,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:42:31,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:31,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:42:31,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:31,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:31,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:42:31,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:31,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:42:31,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:42:31,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675739018] [2020-10-28 12:42:31,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:42:31,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:42:31,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672836591] [2020-10-28 12:42:31,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:42:31,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:42:31,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:42:31,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:42:31,738 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:42:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:42:48,507 INFO L93 Difference]: Finished difference Result 3123 states and 5754 transitions. [2020-10-28 12:42:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:42:48,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-28 12:42:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:42:48,547 INFO L225 Difference]: With dead ends: 3123 [2020-10-28 12:42:48,548 INFO L226 Difference]: Without dead ends: 1936 [2020-10-28 12:42:48,561 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 [2020-10-28 12:42:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-28 12:42:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918. [2020-10-28 12:42:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-10-28 12:42:48,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions. [2020-10-28 12:42:48,741 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 31 [2020-10-28 12:42:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:42:48,742 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions. [2020-10-28 12:42:48,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:42:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions. [2020-10-28 12:42:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 12:42:48,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:42:48,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:42:48,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:42:48,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:42:48,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:42:48,749 INFO L82 PathProgramCache]: Analyzing trace with hash -537988296, now seen corresponding path program 1 times [2020-10-28 12:42:48,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:42:48,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982177088] [2020-10-28 12:42:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:42:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:50,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:50,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:42:50,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:42:50,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1680 [2020-10-28 12:42:50,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:50,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:42:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:42:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:42:50,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:42:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:42:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:50,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:50,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:42:50,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:42:50,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:50,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:42:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:42:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:42:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:42:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:50,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:50,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:42:50,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 12:42:50,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:50,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:42:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:42:50,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:42:50,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:42:51,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982177088] [2020-10-28 12:42:51,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:42:51,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:42:51,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574365944] [2020-10-28 12:42:51,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:42:51,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:42:51,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:42:51,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:42:51,067 INFO L87 Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 7 states. [2020-10-28 12:43:26,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:43:26,694 INFO L93 Difference]: Finished difference Result 5682 states and 8806 transitions. [2020-10-28 12:43:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:43:26,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-28 12:43:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:43:26,721 INFO L225 Difference]: With dead ends: 5682 [2020-10-28 12:43:26,721 INFO L226 Difference]: Without dead ends: 3770 [2020-10-28 12:43:26,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:43:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2020-10-28 12:43:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3661. [2020-10-28 12:43:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3661 states. [2020-10-28 12:43:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5428 transitions. [2020-10-28 12:43:26,854 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5428 transitions. Word has length 107 [2020-10-28 12:43:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:43:26,855 INFO L481 AbstractCegarLoop]: Abstraction has 3661 states and 5428 transitions. [2020-10-28 12:43:26,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:43:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5428 transitions. [2020-10-28 12:43:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 12:43:26,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:43:26,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:43:26,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:43:26,858 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:43:26,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:43:26,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1785288923, now seen corresponding path program 1 times [2020-10-28 12:43:26,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:43:26,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589091439] [2020-10-28 12:43:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:43:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:28,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:28,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 12:43:28,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:43:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-28 12:43:28,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:28,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:43:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:43:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:43:28,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:43:28,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:43:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:28,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:28,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:28,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:43:28,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:43:28,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:28,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:43:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:43:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:43:28,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:43:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:28,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:28,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:28,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:43:28,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:28,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 12:43:28,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:28,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:43:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:43:28,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:43:28,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589091439] [2020-10-28 12:43:28,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:43:28,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:43:28,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799718044] [2020-10-28 12:43:28,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:43:28,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:43:28,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:43:28,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:43:28,788 INFO L87 Difference]: Start difference. First operand 3661 states and 5428 transitions. Second operand 8 states. [2020-10-28 12:44:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:44:07,804 INFO L93 Difference]: Finished difference Result 14264 states and 21900 transitions. [2020-10-28 12:44:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:44:07,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-28 12:44:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:44:07,878 INFO L225 Difference]: With dead ends: 14264 [2020-10-28 12:44:07,879 INFO L226 Difference]: Without dead ends: 10609 [2020-10-28 12:44:07,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:44:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2020-10-28 12:44:08,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 10544. [2020-10-28 12:44:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10544 states. [2020-10-28 12:44:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10544 states to 10544 states and 14555 transitions. [2020-10-28 12:44:08,300 INFO L78 Accepts]: Start accepts. Automaton has 10544 states and 14555 transitions. Word has length 121 [2020-10-28 12:44:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:44:08,306 INFO L481 AbstractCegarLoop]: Abstraction has 10544 states and 14555 transitions. [2020-10-28 12:44:08,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:44:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 10544 states and 14555 transitions. [2020-10-28 12:44:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 12:44:08,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:44:08,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:44:08,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:44:08,323 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:44:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:44:08,324 INFO L82 PathProgramCache]: Analyzing trace with hash -439269793, now seen corresponding path program 1 times [2020-10-28 12:44:08,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:44:08,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531305586] [2020-10-28 12:44:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:44:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:08,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:10,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:10,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 12:44:10,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:44:10,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1738 [2020-10-28 12:44:10,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:10,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:44:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:44:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:44:10,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:44:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:10,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:10,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:44:10,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:44:10,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:10,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:10,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:10,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:44:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:10,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:44:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:10,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:10,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:44:10,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 12:44:10,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:10,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:44:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:44:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:44:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:44:10,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531305586] [2020-10-28 12:44:10,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:44:10,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:44:10,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108058093] [2020-10-28 12:44:10,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:44:10,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:44:10,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:44:10,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:44:10,743 INFO L87 Difference]: Start difference. First operand 10544 states and 14555 transitions. Second operand 7 states. [2020-10-28 12:44:12,761 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:44:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:44:37,554 INFO L93 Difference]: Finished difference Result 31504 states and 45804 transitions. [2020-10-28 12:44:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:44:37,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-28 12:44:37,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:44:37,649 INFO L225 Difference]: With dead ends: 31504 [2020-10-28 12:44:37,649 INFO L226 Difference]: Without dead ends: 20966 [2020-10-28 12:44:37,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:44:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20966 states. [2020-10-28 12:44:38,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20966 to 20866. [2020-10-28 12:44:38,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20866 states. [2020-10-28 12:44:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20866 states to 20866 states and 27874 transitions. [2020-10-28 12:44:38,354 INFO L78 Accepts]: Start accepts. Automaton has 20866 states and 27874 transitions. Word has length 149 [2020-10-28 12:44:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:44:38,355 INFO L481 AbstractCegarLoop]: Abstraction has 20866 states and 27874 transitions. [2020-10-28 12:44:38,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:44:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 20866 states and 27874 transitions. [2020-10-28 12:44:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-28 12:44:38,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:44:38,359 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, 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] [2020-10-28 12:44:38,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:44:38,359 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:44:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:44:38,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1953469998, now seen corresponding path program 1 times [2020-10-28 12:44:38,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:44:38,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523883156] [2020-10-28 12:44:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:44:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:38,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:38,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:43,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:43,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-28 12:44:43,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:44:43,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 12:44:43,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:43,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:44:43,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:44:43,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 12:44:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:44:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:43,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:43,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:44:43,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:44:43,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:43,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:44:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:44:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:43,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:43,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:44:43,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:43,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:44:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:44:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:44:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:44,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:44:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:44,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:44,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:44:44,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:44:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:44,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:44:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 12:44:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:44:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 46 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:44:44,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523883156] [2020-10-28 12:44:44,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:44:44,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:44:44,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000718878] [2020-10-28 12:44:44,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:44:44,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:44:44,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:44:44,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:44:44,415 INFO L87 Difference]: Start difference. First operand 20866 states and 27874 transitions. Second operand 8 states. [2020-10-28 12:44:46,515 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 12:45:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:45:11,282 INFO L93 Difference]: Finished difference Result 43224 states and 59732 transitions. [2020-10-28 12:45:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:45:11,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-28 12:45:11,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:45:11,374 INFO L225 Difference]: With dead ends: 43224 [2020-10-28 12:45:11,375 INFO L226 Difference]: Without dead ends: 22364 [2020-10-28 12:45:11,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:45:11,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22364 states. [2020-10-28 12:45:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22364 to 22063. [2020-10-28 12:45:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22063 states. [2020-10-28 12:45:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22063 states to 22063 states and 29690 transitions. [2020-10-28 12:45:12,117 INFO L78 Accepts]: Start accepts. Automaton has 22063 states and 29690 transitions. Word has length 199 [2020-10-28 12:45:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:45:12,117 INFO L481 AbstractCegarLoop]: Abstraction has 22063 states and 29690 transitions. [2020-10-28 12:45:12,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:45:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 22063 states and 29690 transitions. [2020-10-28 12:45:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-28 12:45:12,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:45:12,121 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, 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] [2020-10-28 12:45:12,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:45:12,122 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:45:12,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:45:12,122 INFO L82 PathProgramCache]: Analyzing trace with hash -387315467, now seen corresponding path program 1 times [2020-10-28 12:45:12,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:45:12,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521517821] [2020-10-28 12:45:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:45:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:12,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:14,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:14,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 12:45:14,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:45:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2206 [2020-10-28 12:45:14,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:14,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:45:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:45:14,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:14,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:45:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:14,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:14,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:45:14,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:14,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:45:14,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:14,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:45:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:45:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:45:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:14,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:14,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:45:14,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:45:14,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:14,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:45:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:45:14,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:45:14,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:45:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:14,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:15,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:15,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:45:15,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:15,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:45:15,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:15,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:15,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:15,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:45:15,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:45:15,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:45:15,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521517821] [2020-10-28 12:45:15,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:45:15,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:45:15,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515991333] [2020-10-28 12:45:15,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:45:15,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:45:15,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:45:15,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:45:15,169 INFO L87 Difference]: Start difference. First operand 22063 states and 29690 transitions. Second operand 7 states. [2020-10-28 12:45:18,663 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:45:46,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:45:46,871 INFO L93 Difference]: Finished difference Result 64111 states and 93074 transitions. [2020-10-28 12:45:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:45:46,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-28 12:45:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:45:47,042 INFO L225 Difference]: With dead ends: 64111 [2020-10-28 12:45:47,042 INFO L226 Difference]: Without dead ends: 42857 [2020-10-28 12:45:47,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:45:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42857 states. [2020-10-28 12:45:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42857 to 39235. [2020-10-28 12:45:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39235 states. [2020-10-28 12:45:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39235 states to 39235 states and 52270 transitions. [2020-10-28 12:45:48,413 INFO L78 Accepts]: Start accepts. Automaton has 39235 states and 52270 transitions. Word has length 206 [2020-10-28 12:45:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:45:48,414 INFO L481 AbstractCegarLoop]: Abstraction has 39235 states and 52270 transitions. [2020-10-28 12:45:48,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:45:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 39235 states and 52270 transitions. [2020-10-28 12:45:48,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 12:45:48,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:45:48,419 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, 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, 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] [2020-10-28 12:45:48,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:45:48,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:45:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:45:48,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1372582859, now seen corresponding path program 1 times [2020-10-28 12:45:48,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:45:48,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797449309] [2020-10-28 12:45:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:45:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:48,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:50,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:50,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-28 12:45:50,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:45:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-10-28 12:45:50,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:50,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:45:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:45:50,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:50,378 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:45:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:45:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:50,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:50,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:50,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:45:50,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:45:50,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:50,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:45:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:45:50,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:45:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:45:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:50,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:50,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:50,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:45:50,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:50,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:45:50,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:50,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:45:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:45:50,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:45:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:50,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:50,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:50,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:45:50,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:50,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 12:45:50,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:50,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:45:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:45:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:45:51,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797449309] [2020-10-28 12:45:51,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:45:51,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:45:51,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909832318] [2020-10-28 12:45:51,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:45:51,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:45:51,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:45:51,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:45:51,078 INFO L87 Difference]: Start difference. First operand 39235 states and 52270 transitions. Second operand 7 states. [2020-10-28 12:45:51,224 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:45:54,807 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66