/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem19_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:42:17,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:42:17,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:42:17,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:42:17,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:42:17,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:42:17,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:42:17,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:42:17,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:42:17,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:42:17,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:42:17,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:42:17,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:42:17,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:42:17,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:42:17,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:42:17,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:42:17,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:42:17,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:42:17,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:42:17,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:42:17,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:42:17,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:42:17,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:42:17,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:42:17,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:42:17,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:42:17,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:42:17,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:42:17,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:42:17,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:42:17,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:42:17,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:42:17,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:42:17,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:42:17,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:42:17,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:42:17,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:42:17,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:42:17,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:42:17,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:42:17,578 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 [2020-10-29 08:42:17,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:42:17,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:42:17,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:42:17,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:42:17,638 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:42:17,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:42:17,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:42:17,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:42:17,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:42:17,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:42:17,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:42:17,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:42:17,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:42:17,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:42:17,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:42:17,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:42:17,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:42:17,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:42:17,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:42:17,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:42:17,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:42:17,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:42:17,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:42:17,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:42:17,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:42:17,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:42:17,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:42:17,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:42:17,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:42:17,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:42:18,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:42:18,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:42:18,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:42:18,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:42:18,119 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:42:18,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label03.c [2020-10-29 08:42:18,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/456c6ca20/a5ddf2ba1e3a4ba2840860461abd9d6b/FLAGa32ead84e [2020-10-29 08:42:19,554 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:42:19,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label03.c [2020-10-29 08:42:19,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/456c6ca20/a5ddf2ba1e3a4ba2840860461abd9d6b/FLAGa32ead84e [2020-10-29 08:42:19,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/456c6ca20/a5ddf2ba1e3a4ba2840860461abd9d6b [2020-10-29 08:42:19,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:42:19,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:42:19,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:42:19,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:42:19,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:42:19,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:42:19" (1/1) ... [2020-10-29 08:42:19,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42584668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:19, skipping insertion in model container [2020-10-29 08:42:19,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:42:19" (1/1) ... [2020-10-29 08:42:19,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:42:19,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:42:22,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:42:22,355 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:42:23,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:42:23,582 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:42:23,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23 WrapperNode [2020-10-29 08:42:23,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:42:23,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:42:23,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:42:23,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:42:23,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (1/1) ... [2020-10-29 08:42:23,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (1/1) ... [2020-10-29 08:42:23,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (1/1) ... [2020-10-29 08:42:23,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (1/1) ... [2020-10-29 08:42:23,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (1/1) ... [2020-10-29 08:42:24,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (1/1) ... [2020-10-29 08:42:24,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (1/1) ... [2020-10-29 08:42:24,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:42:24,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:42:24,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:42:24,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:42:24,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (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 [2020-10-29 08:42:24,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:42:24,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:42:24,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:42:24,370 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:42:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:42:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:42:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:42:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:42:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:42:24,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:42:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:42:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:42:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:42:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:42:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:42:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:42:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:42:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:42:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:42:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:42:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:42:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:42:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:42:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:42:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:42:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:42:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:42:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:42:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:42:40,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:42:40,641 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:42:40,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:42:40 BoogieIcfgContainer [2020-10-29 08:42:40,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:42:40,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:42:40,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:42:40,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:42:40,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:42:19" (1/3) ... [2020-10-29 08:42:40,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4576fd2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:42:40, skipping insertion in model container [2020-10-29 08:42:40,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:23" (2/3) ... [2020-10-29 08:42:40,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4576fd2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:42:40, skipping insertion in model container [2020-10-29 08:42:40,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:42:40" (3/3) ... [2020-10-29 08:42:40,659 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label03.c [2020-10-29 08:42:40,673 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:42:40,680 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:42:40,695 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:42:40,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:42:40,751 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:42:40,751 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:42:40,751 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:42:40,751 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:42:40,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:42:40,752 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:42:40,752 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:42:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:42:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 08:42:40,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:40,835 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] [2020-10-29 08:42:40,836 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:40,845 INFO L82 PathProgramCache]: Analyzing trace with hash -677281995, now seen corresponding path program 1 times [2020-10-29 08:42:40,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:40,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242053972] [2020-10-29 08:42:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:41,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:42:41,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-29 08:42:41,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:41,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:42:41,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:42:41,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 08:42:41,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:42:41,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:42:42,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:42,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:42:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:42:42,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242053972] [2020-10-29 08:42:42,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:42:42,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:42:42,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933840170] [2020-10-29 08:42:42,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:42:42,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:42,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:42:42,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:42:42,081 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-29 08:43:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:10,252 INFO L93 Difference]: Finished difference Result 5116 states and 9607 transitions. [2020-10-29 08:43:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:43:10,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-29 08:43:10,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:10,307 INFO L225 Difference]: With dead ends: 5116 [2020-10-29 08:43:10,307 INFO L226 Difference]: Without dead ends: 3271 [2020-10-29 08:43:10,321 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 [2020-10-29 08:43:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-10-29 08:43:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3200. [2020-10-29 08:43:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2020-10-29 08:43:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5484 transitions. [2020-10-29 08:43:10,576 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5484 transitions. Word has length 64 [2020-10-29 08:43:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:10,579 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 5484 transitions. [2020-10-29 08:43:10,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:43:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5484 transitions. [2020-10-29 08:43:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 08:43:10,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:10,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:43:10,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:43:10,596 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1799345285, now seen corresponding path program 1 times [2020-10-29 08:43:10,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:10,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974845245] [2020-10-29 08:43:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:11,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:11,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 08:43:11,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:43:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1219 [2020-10-29 08:43:11,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:11,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:43:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 08:43:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:43:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:12,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:12,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:12,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:43:12,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:12,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:12,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:12,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:43:12,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:43:12,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974845245] [2020-10-29 08:43:12,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:43:12,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:43:12,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151164008] [2020-10-29 08:43:12,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:43:12,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:12,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:43:12,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:43:12,325 INFO L87 Difference]: Start difference. First operand 3200 states and 5484 transitions. Second operand 6 states. [2020-10-29 08:43:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:48,227 INFO L93 Difference]: Finished difference Result 7888 states and 13865 transitions. [2020-10-29 08:43:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:43:48,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-29 08:43:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:48,261 INFO L225 Difference]: With dead ends: 7888 [2020-10-29 08:43:48,261 INFO L226 Difference]: Without dead ends: 4694 [2020-10-29 08:43:48,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:43:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-10-29 08:43:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4627. [2020-10-29 08:43:48,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2020-10-29 08:43:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 8168 transitions. [2020-10-29 08:43:48,451 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 8168 transitions. Word has length 136 [2020-10-29 08:43:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:48,455 INFO L481 AbstractCegarLoop]: Abstraction has 4627 states and 8168 transitions. [2020-10-29 08:43:48,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:43:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 8168 transitions. [2020-10-29 08:43:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 08:43:48,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:48,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:43:48,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:43:48,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:48,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:48,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1537118068, now seen corresponding path program 1 times [2020-10-29 08:43:48,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:48,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899782155] [2020-10-29 08:43:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:49,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:43:49,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:43:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-29 08:43:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:49,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:43:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:43:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 08:43:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:49,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:43:49,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:49,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:43:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:50,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:50,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:50,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:43:50,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:43:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-29 08:43:50,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:50,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:43:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:43:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:43:50,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899782155] [2020-10-29 08:43:50,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:43:50,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:43:50,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103941920] [2020-10-29 08:43:50,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:43:50,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:50,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:43:50,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:43:50,430 INFO L87 Difference]: Start difference. First operand 4627 states and 8168 transitions. Second operand 7 states. [2020-10-29 08:44:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:44:53,791 INFO L93 Difference]: Finished difference Result 17732 states and 32102 transitions. [2020-10-29 08:44:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:44:53,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-29 08:44:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:44:53,954 INFO L225 Difference]: With dead ends: 17732 [2020-10-29 08:44:53,956 INFO L226 Difference]: Without dead ends: 13111 [2020-10-29 08:44:53,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:44:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13111 states. [2020-10-29 08:44:54,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13111 to 13105. [2020-10-29 08:44:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13105 states. [2020-10-29 08:44:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 21243 transitions. [2020-10-29 08:44:54,376 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 21243 transitions. Word has length 139 [2020-10-29 08:44:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:44:54,377 INFO L481 AbstractCegarLoop]: Abstraction has 13105 states and 21243 transitions. [2020-10-29 08:44:54,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:44:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 21243 transitions. [2020-10-29 08:44:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 08:44:54,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:44:54,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:44:54,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:44:54,380 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:44:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:44:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1453964640, now seen corresponding path program 1 times [2020-10-29 08:44:54,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:44:54,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657742944] [2020-10-29 08:44:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:44:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:54,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:54,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 08:44:54,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 08:44:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:54,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:44:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:44:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:44:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:44:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:54,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:54,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:54,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:44:54,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:44:54,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:54,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:44:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:55,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:44:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:55,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:55,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 08:44:55,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 08:44:55,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:55,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:44:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:44:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:44:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:44:55,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657742944] [2020-10-29 08:44:55,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:44:55,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:44:55,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159589553] [2020-10-29 08:44:55,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:44:55,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:44:55,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:44:55,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:44:55,278 INFO L87 Difference]: Start difference. First operand 13105 states and 21243 transitions. Second operand 7 states. [2020-10-29 08:44:55,436 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:46:00,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:46:00,114 INFO L93 Difference]: Finished difference Result 39578 states and 66235 transitions. [2020-10-29 08:46:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:46:00,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-29 08:46:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:46:00,264 INFO L225 Difference]: With dead ends: 39578 [2020-10-29 08:46:00,265 INFO L226 Difference]: Without dead ends: 26479 [2020-10-29 08:46:00,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:46:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26479 states. [2020-10-29 08:46:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26479 to 26280. [2020-10-29 08:46:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26280 states. [2020-10-29 08:46:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26280 states to 26280 states and 42233 transitions. [2020-10-29 08:46:01,260 INFO L78 Accepts]: Start accepts. Automaton has 26280 states and 42233 transitions. Word has length 145 [2020-10-29 08:46:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:46:01,261 INFO L481 AbstractCegarLoop]: Abstraction has 26280 states and 42233 transitions. [2020-10-29 08:46:01,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:46:01,261 INFO L276 IsEmpty]: Start isEmpty. Operand 26280 states and 42233 transitions. [2020-10-29 08:46:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-29 08:46:01,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:46:01,271 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:46:01,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:46:01,272 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:46:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:46:01,272 INFO L82 PathProgramCache]: Analyzing trace with hash -266306326, now seen corresponding path program 1 times [2020-10-29 08:46:01,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:46:01,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951720404] [2020-10-29 08:46:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:46:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:06,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:06,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-29 08:46:06,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:46:06,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 08:46:06,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:06,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:46:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-29 08:46:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:46:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:46:06,607 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:46:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:46:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:46:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:46:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:06,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:46:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:46:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:46:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:06,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:46:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:06,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:06,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:46:06,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 08:46:06,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:06,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:46:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:46:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:46:06,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 08:46:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:07,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:07,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:46:07,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:07,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 08:46:07,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:07,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:46:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:46:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 08:46:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:46:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:46:07,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951720404] [2020-10-29 08:46:07,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:46:07,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:46:07,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622954024] [2020-10-29 08:46:07,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:46:07,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:46:07,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:46:07,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:46:07,490 INFO L87 Difference]: Start difference. First operand 26280 states and 42233 transitions. Second operand 7 states. [2020-10-29 08:46:09,050 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:46:11,085 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66