/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/Problem13_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:21:37,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:21:37,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:21:37,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:21:37,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:21:37,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:21:37,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:21:37,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:21:37,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:21:37,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:21:37,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:21:37,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:21:37,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:21:37,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:21:37,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:21:37,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:21:37,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:21:37,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:21:37,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:21:37,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:21:37,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:21:37,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:21:37,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:21:37,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:21:37,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:21:37,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:21:37,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:21:37,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:21:37,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:21:37,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:21:37,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:21:37,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:21:37,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:21:37,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:21:37,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:21:37,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:21:37,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:21:37,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:21:37,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:21:37,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:21:37,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:21:37,706 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 07:21:37,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:21:37,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:21:37,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:21:37,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:21:37,751 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:21:37,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:21:37,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:21:37,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:21:37,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:21:37,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:21:37,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:21:37,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:21:37,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:21:37,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:21:37,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:21:37,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:21:37,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:21:37,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:21:37,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:21:37,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:21:37,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:21:37,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:21:37,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:21:37,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:21:37,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:21:37,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:21:37,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:21:37,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:21:37,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:21:37,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:21:38,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:21:38,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:21:38,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:21:38,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:21:38,210 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:21:38,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45.c [2020-10-29 07:21:38,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02714a0b9/5c73a17172a2414cb3b3297d38320eaf/FLAGe58d4c5f5 [2020-10-29 07:21:39,441 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:21:39,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label45.c [2020-10-29 07:21:39,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02714a0b9/5c73a17172a2414cb3b3297d38320eaf/FLAGe58d4c5f5 [2020-10-29 07:21:39,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02714a0b9/5c73a17172a2414cb3b3297d38320eaf [2020-10-29 07:21:39,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:21:39,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:21:39,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:21:39,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:21:39,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:21:39,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:21:39" (1/1) ... [2020-10-29 07:21:39,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301ec25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:39, skipping insertion in model container [2020-10-29 07:21:39,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:21:39" (1/1) ... [2020-10-29 07:21:39,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:21:40,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:21:41,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:21:41,690 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:21:42,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:21:42,431 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:21:42,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42 WrapperNode [2020-10-29 07:21:42,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:21:42,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:21:42,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:21:42,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:21:42,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (1/1) ... [2020-10-29 07:21:42,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (1/1) ... [2020-10-29 07:21:42,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (1/1) ... [2020-10-29 07:21:42,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (1/1) ... [2020-10-29 07:21:42,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (1/1) ... [2020-10-29 07:21:42,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (1/1) ... [2020-10-29 07:21:42,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (1/1) ... [2020-10-29 07:21:42,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:21:42,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:21:42,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:21:42,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:21:42,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (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 07:21:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:21:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:21:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:21:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:21:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:21:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:21:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:21:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:21:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:21:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:21:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:21:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:21:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:21:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:21:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:21:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:21:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:21:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:21:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:21:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:21:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:21:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:21:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:21:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:21:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:21:52,615 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:21:52,616 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:21:52,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:21:52 BoogieIcfgContainer [2020-10-29 07:21:52,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:21:52,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:21:52,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:21:52,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:21:52,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:21:39" (1/3) ... [2020-10-29 07:21:52,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4509d607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:21:52, skipping insertion in model container [2020-10-29 07:21:52,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:42" (2/3) ... [2020-10-29 07:21:52,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4509d607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:21:52, skipping insertion in model container [2020-10-29 07:21:52,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:21:52" (3/3) ... [2020-10-29 07:21:52,629 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label45.c [2020-10-29 07:21:52,642 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:21:52,648 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:21:52,662 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:21:52,699 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:21:52,699 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:21:52,699 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:21:52,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:21:52,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:21:52,700 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:21:52,700 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:21:52,700 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:21:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:21:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 07:21:52,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:21:52,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:21:52,749 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:21:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:21:52,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2073438374, now seen corresponding path program 1 times [2020-10-29 07:21:52,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:21:52,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570282453] [2020-10-29 07:21:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:21:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:53,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:53,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 07:21:53,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-29 07:21:53,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:53,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:21:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:21:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 07:21:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:21:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:21:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:53,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:53,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:21:53,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:21:53,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:53,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:21:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:21:53,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:21:53,647 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 07:21:53,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570282453] [2020-10-29 07:21:53,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:21:53,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:21:53,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306969346] [2020-10-29 07:21:53,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:21:53,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:21:53,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:21:53,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:21:53,680 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:22:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:12,230 INFO L93 Difference]: Finished difference Result 3157 states and 5837 transitions. [2020-10-29 07:22:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:22:12,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-29 07:22:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:12,264 INFO L225 Difference]: With dead ends: 3157 [2020-10-29 07:22:12,265 INFO L226 Difference]: Without dead ends: 1955 [2020-10-29 07:22:12,275 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 07:22:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-10-29 07:22:12,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1886. [2020-10-29 07:22:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2020-10-29 07:22:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 3104 transitions. [2020-10-29 07:22:12,435 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 3104 transitions. Word has length 14 [2020-10-29 07:22:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:12,436 INFO L481 AbstractCegarLoop]: Abstraction has 1886 states and 3104 transitions. [2020-10-29 07:22:12,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:22:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 3104 transitions. [2020-10-29 07:22:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 07:22:12,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:12,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:12,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:22:12,443 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:12,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2020870712, now seen corresponding path program 1 times [2020-10-29 07:22:12,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:12,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580399463] [2020-10-29 07:22:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:12,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:13,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:13,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:22:13,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:22:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-29 07:22:13,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:13,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:22:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:22:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:13,786 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:22:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:13,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:13,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:13,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:13,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:22:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:13,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:13,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:13,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:14,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:14,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:22:14,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 07:22:14,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:14,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:22:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:22:14,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:14,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580399463] [2020-10-29 07:22:14,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:22:14,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:22:14,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255516774] [2020-10-29 07:22:14,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:22:14,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:14,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:22:14,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:22:14,307 INFO L87 Difference]: Start difference. First operand 1886 states and 3104 transitions. Second operand 8 states. [2020-10-29 07:22:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:43,198 INFO L93 Difference]: Finished difference Result 7252 states and 12047 transitions. [2020-10-29 07:22:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:22:43,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-29 07:22:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:43,244 INFO L225 Difference]: With dead ends: 7252 [2020-10-29 07:22:43,244 INFO L226 Difference]: Without dead ends: 5372 [2020-10-29 07:22:43,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:22:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2020-10-29 07:22:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5310. [2020-10-29 07:22:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5310 states. [2020-10-29 07:22:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 7778 transitions. [2020-10-29 07:22:43,451 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 7778 transitions. Word has length 84 [2020-10-29 07:22:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:43,452 INFO L481 AbstractCegarLoop]: Abstraction has 5310 states and 7778 transitions. [2020-10-29 07:22:43,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:22:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 7778 transitions. [2020-10-29 07:22:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 07:22:43,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:43,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:43,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:22:43,459 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:43,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash -439178414, now seen corresponding path program 1 times [2020-10-29 07:22:43,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:43,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937316609] [2020-10-29 07:22:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:43,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:22:43,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-29 07:22:43,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:43,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:22:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:22:43,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:43,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:43,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:43,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:22:43,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:43,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:43,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:22:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 07:22:44,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:44,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:22:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:22:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:44,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937316609] [2020-10-29 07:22:44,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:22:44,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:22:44,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691736789] [2020-10-29 07:22:44,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:22:44,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:44,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:22:44,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:22:44,349 INFO L87 Difference]: Start difference. First operand 5310 states and 7778 transitions. Second operand 7 states. [2020-10-29 07:23:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:12,477 INFO L93 Difference]: Finished difference Result 15918 states and 23801 transitions. [2020-10-29 07:23:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:23:12,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-29 07:23:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:12,540 INFO L225 Difference]: With dead ends: 15918 [2020-10-29 07:23:12,540 INFO L226 Difference]: Without dead ends: 10614 [2020-10-29 07:23:12,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:23:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10614 states. [2020-10-29 07:23:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10614 to 10408. [2020-10-29 07:23:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10408 states. [2020-10-29 07:23:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10408 states to 10408 states and 14278 transitions. [2020-10-29 07:23:12,866 INFO L78 Accepts]: Start accepts. Automaton has 10408 states and 14278 transitions. Word has length 89 [2020-10-29 07:23:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:12,870 INFO L481 AbstractCegarLoop]: Abstraction has 10408 states and 14278 transitions. [2020-10-29 07:23:12,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:23:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 10408 states and 14278 transitions. [2020-10-29 07:23:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 07:23:12,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:12,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:23:12,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:23:12,885 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:12,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1941758210, now seen corresponding path program 1 times [2020-10-29 07:23:12,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:12,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345624760] [2020-10-29 07:23:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:13,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:14,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:14,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:23:14,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1755 [2020-10-29 07:23:14,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:14,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:23:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:23:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:23:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:14,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:14,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:23:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:14,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:23:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:15,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:23:15,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 07:23:15,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:15,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:23:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:23:15,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345624760] [2020-10-29 07:23:15,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:23:15,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:23:15,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945304795] [2020-10-29 07:23:15,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:15,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:15,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:15,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:15,417 INFO L87 Difference]: Start difference. First operand 10408 states and 14278 transitions. Second operand 7 states. [2020-10-29 07:23:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:58,410 INFO L93 Difference]: Finished difference Result 27272 states and 40723 transitions. [2020-10-29 07:23:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:23:58,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-29 07:23:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:58,510 INFO L225 Difference]: With dead ends: 27272 [2020-10-29 07:23:58,511 INFO L226 Difference]: Without dead ends: 16870 [2020-10-29 07:23:58,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:23:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16870 states. [2020-10-29 07:23:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16870 to 16764. [2020-10-29 07:23:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16764 states. [2020-10-29 07:23:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 22017 transitions. [2020-10-29 07:23:59,100 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 22017 transitions. Word has length 129 [2020-10-29 07:23:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:59,102 INFO L481 AbstractCegarLoop]: Abstraction has 16764 states and 22017 transitions. [2020-10-29 07:23:59,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:23:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 22017 transitions. [2020-10-29 07:23:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-29 07:23:59,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:59,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:23:59,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:23:59,116 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:59,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1730506009, now seen corresponding path program 1 times [2020-10-29 07:23:59,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:59,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724346568] [2020-10-29 07:23:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:59,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:02,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:02,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 07:24:02,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:24:02,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2848 [2020-10-29 07:24:02,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:02,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:24:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:24:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 07:24:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:02,222 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:24:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:02,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:02,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:02,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:24:02,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:02,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:24:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:02,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:02,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:02,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:02,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:24:02,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:24:02,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-29 07:24:02,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:02,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:02,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:02,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:24:02,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:24:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:02,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:02,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:24:02,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:02,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 07:24:02,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:02,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:24:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:24:02,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724346568] [2020-10-29 07:24:02,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:24:02,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:24:02,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968252851] [2020-10-29 07:24:02,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:24:02,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:02,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:24:02,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:24:02,976 INFO L87 Difference]: Start difference. First operand 16764 states and 22017 transitions. Second operand 7 states. [2020-10-29 07:24:03,122 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:24:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:29,593 INFO L93 Difference]: Finished difference Result 37932 states and 52484 transitions. [2020-10-29 07:24:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:24:29,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-29 07:24:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:29,688 INFO L225 Difference]: With dead ends: 37932 [2020-10-29 07:24:29,688 INFO L226 Difference]: Without dead ends: 21977 [2020-10-29 07:24:29,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 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 07:24:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21977 states. [2020-10-29 07:24:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21977 to 21056. [2020-10-29 07:24:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21056 states. [2020-10-29 07:24:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21056 states to 21056 states and 26183 transitions. [2020-10-29 07:24:30,604 INFO L78 Accepts]: Start accepts. Automaton has 21056 states and 26183 transitions. Word has length 203 [2020-10-29 07:24:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:24:30,605 INFO L481 AbstractCegarLoop]: Abstraction has 21056 states and 26183 transitions. [2020-10-29 07:24:30,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:24:30,605 INFO L276 IsEmpty]: Start isEmpty. Operand 21056 states and 26183 transitions. [2020-10-29 07:24:30,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 07:24:30,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:30,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:24:30,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:24:30,611 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:30,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:30,611 INFO L82 PathProgramCache]: Analyzing trace with hash -784454827, now seen corresponding path program 1 times [2020-10-29 07:24:30,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:30,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278889555] [2020-10-29 07:24:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:32,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:32,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 07:24:32,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:24:32,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1458 [2020-10-29 07:24:32,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:32,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:24:32,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:24:32,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:32,365 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:24:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:32,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:32,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:32,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:32,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:24:32,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:32,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:24:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:24:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:32,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:32,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:24:32,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:24:32,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:32,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:24:32,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:24:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:32,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:32,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:32,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:24:32,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 07:24:32,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:32,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:24:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:24:33,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278889555] [2020-10-29 07:24:33,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:24:33,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:24:33,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665551076] [2020-10-29 07:24:33,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:24:33,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:33,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:24:33,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:24:33,156 INFO L87 Difference]: Start difference. First operand 21056 states and 26183 transitions. Second operand 8 states. [2020-10-29 07:24:33,320 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:24:36,053 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:25:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:25:17,768 INFO L93 Difference]: Finished difference Result 62533 states and 86850 transitions. [2020-10-29 07:25:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:25:17,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2020-10-29 07:25:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:25:17,936 INFO L225 Difference]: With dead ends: 62533 [2020-10-29 07:25:17,937 INFO L226 Difference]: Without dead ends: 42286 [2020-10-29 07:25:17,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:25:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42286 states. [2020-10-29 07:25:19,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42286 to 42053. [2020-10-29 07:25:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42053 states. [2020-10-29 07:25:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42053 states to 42053 states and 56818 transitions. [2020-10-29 07:25:19,239 INFO L78 Accepts]: Start accepts. Automaton has 42053 states and 56818 transitions. Word has length 221 [2020-10-29 07:25:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:25:19,240 INFO L481 AbstractCegarLoop]: Abstraction has 42053 states and 56818 transitions. [2020-10-29 07:25:19,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:25:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 42053 states and 56818 transitions. [2020-10-29 07:25:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-29 07:25:19,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:19,247 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:25:19,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:25:19,248 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:19,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:19,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2015513797, now seen corresponding path program 1 times [2020-10-29 07:25:19,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:19,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083208964] [2020-10-29 07:25:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-29 07:25:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:25:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 07:25:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:24,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-29 07:25:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:25:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:24,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:24,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:24,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:24,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:24,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:25:24,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:24,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:24,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:25:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:25:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:24,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:25:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:24,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:24,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:25:24,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:24,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:25:24,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:24,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:25:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:25:24,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:25:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:24,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:24,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:25:24,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:25:24,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:24,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:25:24,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:25:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-29 07:25:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:25,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:25,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:25:25,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 07:25:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:25,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:25:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:25:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:25:25,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083208964] [2020-10-29 07:25:25,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:25:25,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:25:25,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318587055] [2020-10-29 07:25:25,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:25:25,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:25,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:25:25,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:25:25,312 INFO L87 Difference]: Start difference. First operand 42053 states and 56818 transitions. Second operand 7 states. [2020-10-29 07:25:25,461 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66