/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_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:42:20,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:42:20,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:42:20,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:42:20,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:42:20,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:42:20,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:42:20,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:42:20,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:42:20,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:42:20,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:42:20,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:42:20,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:42:20,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:42:20,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:42:20,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:42:20,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:42:20,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:42:20,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:42:20,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:42:20,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:42:20,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:42:20,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:42:20,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:42:20,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:42:20,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:42:20,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:42:20,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:42:20,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:42:20,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:42:20,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:42:20,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:42:20,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:42:20,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:42:20,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:42:20,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:42:20,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:42:20,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:42:20,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:42:20,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:42:20,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:42:20,765 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 08:42:20,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:42:20,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:42:20,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:42:20,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:42:20,822 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:42:20,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:42:20,823 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:42:20,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:42:20,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:42:20,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:42:20,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:42:20,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:42:20,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:42:20,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:42:20,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:42:20,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:42:20,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:42:20,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:42:20,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:42:20,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:42:20,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:42:20,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:42:20,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:42:20,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:42:20,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:42:20,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:42:20,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:42:20,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:42:20,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:42:20,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:42:21,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:42:21,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:42:21,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:42:21,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:42:21,327 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:42:21,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label04.c [2020-10-29 08:42:21,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2e5a4964/91a97a1f0ad04fc286fecc2a1cef22d0/FLAG1b1c6fa11 [2020-10-29 08:42:22,610 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:42:22,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label04.c [2020-10-29 08:42:22,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2e5a4964/91a97a1f0ad04fc286fecc2a1cef22d0/FLAG1b1c6fa11 [2020-10-29 08:42:22,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2e5a4964/91a97a1f0ad04fc286fecc2a1cef22d0 [2020-10-29 08:42:22,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:42:22,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:42:22,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:42:22,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:42:22,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:42:22,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:42:22" (1/1) ... [2020-10-29 08:42:22,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9a57f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:22, skipping insertion in model container [2020-10-29 08:42:22,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:42:22" (1/1) ... [2020-10-29 08:42:22,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:42:23,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:42:25,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:42:25,299 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:42:26,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:42:26,674 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:42:26,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26 WrapperNode [2020-10-29 08:42:26,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:42:26,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:42:26,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:42:26,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:42:26,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (1/1) ... [2020-10-29 08:42:26,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (1/1) ... [2020-10-29 08:42:26,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (1/1) ... [2020-10-29 08:42:26,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (1/1) ... [2020-10-29 08:42:26,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (1/1) ... [2020-10-29 08:42:27,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (1/1) ... [2020-10-29 08:42:27,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (1/1) ... [2020-10-29 08:42:27,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:42:27,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:42:27,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:42:27,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:42:27,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (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 08:42:27,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:42:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:42:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:42:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:42:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:42:27,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:42:27,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:42:27,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:42:27,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:42:27,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:42:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:42:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:42:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:42:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:42:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:42:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:42:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:42:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:42:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:42:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:42:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:42:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:42:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:42:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:42:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:42:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:42:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:42:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:42:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:42:41,519 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:42:41,520 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:42:41,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:42:41 BoogieIcfgContainer [2020-10-29 08:42:41,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:42:41,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:42:41,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:42:41,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:42:41,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:42:22" (1/3) ... [2020-10-29 08:42:41,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348897f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:42:41, skipping insertion in model container [2020-10-29 08:42:41,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:42:26" (2/3) ... [2020-10-29 08:42:41,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348897f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:42:41, skipping insertion in model container [2020-10-29 08:42:41,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:42:41" (3/3) ... [2020-10-29 08:42:41,541 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label04.c [2020-10-29 08:42:41,554 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:42:41,561 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:42:41,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:42:41,618 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:42:41,619 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:42:41,619 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:42:41,619 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:42:41,619 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:42:41,619 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:42:41,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:42:41,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:42:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:42:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 08:42:41,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:42:41,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:42:41,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:42:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:42:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1482585906, now seen corresponding path program 1 times [2020-10-29 08:42:41,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:42:41,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019317648] [2020-10-29 08:42:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:42:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:43,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:43,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:42:43,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 952 [2020-10-29 08:42:43,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:43,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:42:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:42:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:42:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 08:42:43,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:42:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:42:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:42:43,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:42:43,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:42:43,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:42:43,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:42:43,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:42:43,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:42:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:42:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:42:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:42:43,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:42:43,344 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 08:42:43,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019317648] [2020-10-29 08:42:43,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:42:43,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:42:43,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519117969] [2020-10-29 08:42:43,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:42:43,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:42:43,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:42:43,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:42:43,379 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-29 08:43:12,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:12,350 INFO L93 Difference]: Finished difference Result 5092 states and 9568 transitions. [2020-10-29 08:43:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:43:12,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-29 08:43:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:12,403 INFO L225 Difference]: With dead ends: 5092 [2020-10-29 08:43:12,404 INFO L226 Difference]: Without dead ends: 3247 [2020-10-29 08:43:12,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:43:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2020-10-29 08:43:12,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 3180. [2020-10-29 08:43:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3180 states. [2020-10-29 08:43:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 5851 transitions. [2020-10-29 08:43:12,651 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 5851 transitions. Word has length 69 [2020-10-29 08:43:12,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:12,652 INFO L481 AbstractCegarLoop]: Abstraction has 3180 states and 5851 transitions. [2020-10-29 08:43:12,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:43:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 5851 transitions. [2020-10-29 08:43:12,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 08:43:12,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:12,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:43:12,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:43:12,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash -927802528, now seen corresponding path program 1 times [2020-10-29 08:43:12,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:12,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823216444] [2020-10-29 08:43:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:12,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:14,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:14,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 08:43:14,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:43:14,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2014 [2020-10-29 08:43:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:14,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 08:43:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 08:43:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:43:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:14,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:14,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:14,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:14,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:14,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:43:14,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:14,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:43:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:43:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:15,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:15,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:15,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:43:15,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:43:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:43:15,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:15,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 08:43:15,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:43:15,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823216444] [2020-10-29 08:43:15,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:43:15,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:43:15,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097930482] [2020-10-29 08:43:15,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:43:15,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:15,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:43:15,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:43:15,196 INFO L87 Difference]: Start difference. First operand 3180 states and 5851 transitions. Second operand 5 states. [2020-10-29 08:43:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:43:50,781 INFO L93 Difference]: Finished difference Result 9217 states and 17194 transitions. [2020-10-29 08:43:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:43:50,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-29 08:43:50,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:43:50,825 INFO L225 Difference]: With dead ends: 9217 [2020-10-29 08:43:50,826 INFO L226 Difference]: Without dead ends: 6043 [2020-10-29 08:43:50,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:43:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2020-10-29 08:43:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 6020. [2020-10-29 08:43:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6020 states. [2020-10-29 08:43:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 9237 transitions. [2020-10-29 08:43:51,066 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 9237 transitions. Word has length 140 [2020-10-29 08:43:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:43:51,070 INFO L481 AbstractCegarLoop]: Abstraction has 6020 states and 9237 transitions. [2020-10-29 08:43:51,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:43:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 9237 transitions. [2020-10-29 08:43:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 08:43:51,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:43:51,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:43:51,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:43:51,086 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:43:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:43:51,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1540675954, now seen corresponding path program 1 times [2020-10-29 08:43:51,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:43:51,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588930947] [2020-10-29 08:43:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:43:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:51,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 08:43:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-29 08:43:51,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:51,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:43:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:43:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:43:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:51,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:43:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:51,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:51,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:51,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:43:51,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:43:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:51,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:43:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:43:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:43:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:43:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:43:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:43:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:43:52,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:43:52,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:43:52,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:43:52,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 08:43:52,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:43:52,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:43:52,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:43:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:43:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:43:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:43:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:43:52,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588930947] [2020-10-29 08:43:52,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:43:52,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:43:52,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993140605] [2020-10-29 08:43:52,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:43:52,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:43:52,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:43:52,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:43:52,143 INFO L87 Difference]: Start difference. First operand 6020 states and 9237 transitions. Second operand 7 states. [2020-10-29 08:44:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:44:38,975 INFO L93 Difference]: Finished difference Result 15259 states and 23868 transitions. [2020-10-29 08:44:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:44:38,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-29 08:44:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:44:39,038 INFO L225 Difference]: With dead ends: 15259 [2020-10-29 08:44:39,038 INFO L226 Difference]: Without dead ends: 9245 [2020-10-29 08:44:39,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:44:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9245 states. [2020-10-29 08:44:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9245 to 9081. [2020-10-29 08:44:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9081 states. [2020-10-29 08:44:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9081 states to 9081 states and 13133 transitions. [2020-10-29 08:44:39,423 INFO L78 Accepts]: Start accepts. Automaton has 9081 states and 13133 transitions. Word has length 142 [2020-10-29 08:44:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:44:39,426 INFO L481 AbstractCegarLoop]: Abstraction has 9081 states and 13133 transitions. [2020-10-29 08:44:39,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:44:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9081 states and 13133 transitions. [2020-10-29 08:44:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 08:44:39,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:44:39,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 08:44:39,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:44:39,436 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:44:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:44:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1339435761, now seen corresponding path program 1 times [2020-10-29 08:44:39,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:44:39,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249951126] [2020-10-29 08:44:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:44:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:40,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:40,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 08:44:40,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:44:40,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-10-29 08:44:40,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:40,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:40,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:44:40,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 08:44:40,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:44:40,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:40,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:44:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:40,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:40,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:44:40,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:44:40,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:40,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:44:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:44:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:44:40,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:44:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:44:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:44:40,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:44:40,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:44:40,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:44:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 08:44:40,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:44:40,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:44:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:44:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:44:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:44:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:44:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:44:40,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249951126] [2020-10-29 08:44:40,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:44:40,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:44:40,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899093515] [2020-10-29 08:44:40,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:44:40,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:44:40,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:44:40,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:44:40,869 INFO L87 Difference]: Start difference. First operand 9081 states and 13133 transitions. Second operand 6 states. [2020-10-29 08:45:41,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:45:41,026 INFO L93 Difference]: Finished difference Result 26782 states and 42415 transitions. [2020-10-29 08:45:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:45:41,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-10-29 08:45:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:45:41,124 INFO L225 Difference]: With dead ends: 26782 [2020-10-29 08:45:41,124 INFO L226 Difference]: Without dead ends: 17707 [2020-10-29 08:45:41,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:45:41,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17707 states. [2020-10-29 08:45:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17707 to 17687. [2020-10-29 08:45:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17687 states. [2020-10-29 08:45:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17687 states to 17687 states and 26564 transitions. [2020-10-29 08:45:41,764 INFO L78 Accepts]: Start accepts. Automaton has 17687 states and 26564 transitions. Word has length 145 [2020-10-29 08:45:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:45:41,764 INFO L481 AbstractCegarLoop]: Abstraction has 17687 states and 26564 transitions. [2020-10-29 08:45:41,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:45:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17687 states and 26564 transitions. [2020-10-29 08:45:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 08:45:41,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:45:41,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:41,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:45:41,770 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:45:41,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:45:41,771 INFO L82 PathProgramCache]: Analyzing trace with hash 700363763, now seen corresponding path program 1 times [2020-10-29 08:45:41,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:45:41,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596638364] [2020-10-29 08:45:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:45:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:41,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:43,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:44,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:44,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 08:45:44,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:45:44,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2565 [2020-10-29 08:45:44,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:44,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:44,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:45:44,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:45:44,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:45:44,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:45:44,575 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:45:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:45:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:44,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:44,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:45:44,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:45:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:44,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:45:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:45:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:45:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:45:44,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:45:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:44,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:44,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 08:45:44,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:44,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 08:45:44,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:44,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:45:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:45:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:45:44,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:45:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:45:45,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596638364] [2020-10-29 08:45:45,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:45:45,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:45:45,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496868140] [2020-10-29 08:45:45,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:45:45,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:45:45,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:45:45,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:45:45,075 INFO L87 Difference]: Start difference. First operand 17687 states and 26564 transitions. Second operand 7 states. [2020-10-29 08:45:45,246 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:45:48,421 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68