/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:20:53,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:20:53,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:20:53,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:20:53,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:20:53,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:20:53,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:20:53,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:20:53,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:20:53,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:20:53,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:20:53,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:20:53,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:20:53,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:20:53,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:20:53,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:20:53,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:20:53,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:20:53,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:20:53,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:20:53,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:20:53,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:20:53,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:20:53,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:20:53,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:20:53,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:20:53,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:20:53,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:20:53,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:20:53,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:20:53,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:20:53,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:20:53,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:20:53,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:20:53,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:20:53,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:20:53,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:20:53,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:20:53,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:20:53,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:20:53,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:20:53,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:20:53,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:20:53,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:20:53,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:20:53,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:20:53,788 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:20:53,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:20:53,788 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:20:53,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:20:53,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:20:53,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:20:53,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:20:53,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:20:53,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:20:53,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:20:53,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:20:53,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:20:53,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:20:53,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:20:53,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:20:53,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:20:53,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:20:53,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:20:53,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:20:53,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:20:53,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:20:53,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:20:53,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:20:53,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:20:53,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:20:53,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:20:54,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:20:54,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:20:54,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:20:54,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:20:54,288 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:20:54,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34.c [2020-10-28 12:20:54,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15b438c7/15d4aa3f9dcb4ef0bef6f1245f15fdba/FLAG28caaae99 [2020-10-28 12:20:55,474 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:20:55,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label34.c [2020-10-28 12:20:55,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15b438c7/15d4aa3f9dcb4ef0bef6f1245f15fdba/FLAG28caaae99 [2020-10-28 12:20:55,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e15b438c7/15d4aa3f9dcb4ef0bef6f1245f15fdba [2020-10-28 12:20:55,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:20:55,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:20:55,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:20:55,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:20:55,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:20:55,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:20:55" (1/1) ... [2020-10-28 12:20:55,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63665925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:55, skipping insertion in model container [2020-10-28 12:20:55,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:20:55" (1/1) ... [2020-10-28 12:20:56,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:20:56,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:20:57,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:20:57,573 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:20:58,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:20:58,233 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:20:58,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58 WrapperNode [2020-10-28 12:20:58,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:20:58,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:20:58,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:20:58,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:20:58,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (1/1) ... [2020-10-28 12:20:58,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (1/1) ... [2020-10-28 12:20:58,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (1/1) ... [2020-10-28 12:20:58,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (1/1) ... [2020-10-28 12:20:58,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (1/1) ... [2020-10-28 12:20:58,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (1/1) ... [2020-10-28 12:20:58,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (1/1) ... [2020-10-28 12:20:58,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:20:58,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:20:58,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:20:58,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:20:58,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:20:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:20:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:20:58,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:20:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:20:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:20:58,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:20:58,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:20:58,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:20:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:20:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:20:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:20:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:20:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:20:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:20:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:20:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:20:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:20:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:20:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:20:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:20:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:20:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:21:04,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:21:04,577 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:21:04,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:21:04 BoogieIcfgContainer [2020-10-28 12:21:04,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:21:04,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:21:04,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:21:04,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:21:04,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:20:55" (1/3) ... [2020-10-28 12:21:04,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548d3c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:21:04, skipping insertion in model container [2020-10-28 12:21:04,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:58" (2/3) ... [2020-10-28 12:21:04,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548d3c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:21:04, skipping insertion in model container [2020-10-28 12:21:04,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:21:04" (3/3) ... [2020-10-28 12:21:04,592 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label34.c [2020-10-28 12:21:04,607 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:21:04,614 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:21:04,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:21:04,672 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:21:04,672 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:21:04,672 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:21:04,673 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:21:04,673 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:21:04,673 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:21:04,673 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:21:04,673 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:21:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:21:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 12:21:04,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:04,722 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] [2020-10-28 12:21:04,723 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:04,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1074996300, now seen corresponding path program 1 times [2020-10-28 12:21:04,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:04,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500524141] [2020-10-28 12:21:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:05,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:05,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 12:21:05,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:05,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-28 12:21:05,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:05,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 12:21:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:21:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:05,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:05,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:05,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:21:05,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:05,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:05,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:05,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:05,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500524141] [2020-10-28 12:21:05,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:05,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:21:05,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882548225] [2020-10-28 12:21:05,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:21:05,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:05,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:21:05,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:21:05,816 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:21:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:18,558 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:21:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:21:18,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-28 12:21:18,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:18,597 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:21:18,597 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:21:18,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:21:18,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:21:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:21:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:21:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-28 12:21:18,826 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 23 [2020-10-28 12:21:18,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:18,826 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-28 12:21:18,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:21:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-28 12:21:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 12:21:18,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:18,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:18,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:21:18,833 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:18,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:18,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1578486569, now seen corresponding path program 1 times [2020-10-28 12:21:18,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:18,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388099880] [2020-10-28 12:21:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:20,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:21:20,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-28 12:21:20,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:20,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:20,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:20,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:20,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:21:20,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:21:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:20,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:20,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:20,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:21:20,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:20,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:20,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:20,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:20,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:21:20,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 12:21:20,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:20,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:20,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:20,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:20,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:21:20,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:20,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388099880] [2020-10-28 12:21:20,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:20,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:21:20,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932913639] [2020-10-28 12:21:20,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:20,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:20,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:20,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:20,606 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 7 states. [2020-10-28 12:21:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:33,422 INFO L93 Difference]: Finished difference Result 3978 states and 7198 transitions. [2020-10-28 12:21:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:21:33,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 12:21:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:33,443 INFO L225 Difference]: With dead ends: 3978 [2020-10-28 12:21:33,444 INFO L226 Difference]: Without dead ends: 2430 [2020-10-28 12:21:33,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:21:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-10-28 12:21:33,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2356. [2020-10-28 12:21:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2356 states. [2020-10-28 12:21:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3820 transitions. [2020-10-28 12:21:33,564 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3820 transitions. Word has length 96 [2020-10-28 12:21:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:33,565 INFO L481 AbstractCegarLoop]: Abstraction has 2356 states and 3820 transitions. [2020-10-28 12:21:33,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3820 transitions. [2020-10-28 12:21:33,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 12:21:33,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:33,569 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:33,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:21:33,569 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:33,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1786283987, now seen corresponding path program 1 times [2020-10-28 12:21:33,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:33,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50293647] [2020-10-28 12:21:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:33,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:34,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:34,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:21:34,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:34,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-28 12:21:34,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:34,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:34,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:21:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 12:21:34,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:34,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:34,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:34,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:21:34,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:34,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:34,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:21:34,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:34,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:21:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:34,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:21:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:34,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50293647] [2020-10-28 12:21:34,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:34,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:21:34,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204880446] [2020-10-28 12:21:34,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:21:34,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:34,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:21:34,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:21:34,792 INFO L87 Difference]: Start difference. First operand 2356 states and 3820 transitions. Second operand 5 states. [2020-10-28 12:21:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:47,976 INFO L93 Difference]: Finished difference Result 7106 states and 11698 transitions. [2020-10-28 12:21:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:21:47,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-28 12:21:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:48,006 INFO L225 Difference]: With dead ends: 7106 [2020-10-28 12:21:48,007 INFO L226 Difference]: Without dead ends: 4756 [2020-10-28 12:21:48,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:21:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2020-10-28 12:21:48,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4738. [2020-10-28 12:21:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4738 states. [2020-10-28 12:21:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6814 transitions. [2020-10-28 12:21:48,170 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6814 transitions. Word has length 98 [2020-10-28 12:21:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:48,171 INFO L481 AbstractCegarLoop]: Abstraction has 4738 states and 6814 transitions. [2020-10-28 12:21:48,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:21:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6814 transitions. [2020-10-28 12:21:48,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 12:21:48,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:48,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:48,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:21:48,174 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:48,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:48,175 INFO L82 PathProgramCache]: Analyzing trace with hash 990011193, now seen corresponding path program 1 times [2020-10-28 12:21:48,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:48,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607650583] [2020-10-28 12:21:48,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:49,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:49,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 12:21:49,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-28 12:21:49,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:49,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:49,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:49,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:49,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:21:49,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:49,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:49,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:49,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:49,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:21:49,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:49,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:49,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:49,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:21:49,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 12:21:49,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:49,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:21:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:21:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:49,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607650583] [2020-10-28 12:21:49,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:49,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:21:49,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666883743] [2020-10-28 12:21:49,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:49,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:49,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:49,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:49,695 INFO L87 Difference]: Start difference. First operand 4738 states and 6814 transitions. Second operand 7 states. [2020-10-28 12:22:06,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:06,669 INFO L93 Difference]: Finished difference Result 14460 states and 21377 transitions. [2020-10-28 12:22:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:22:06,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-28 12:22:06,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:06,724 INFO L225 Difference]: With dead ends: 14460 [2020-10-28 12:22:06,724 INFO L226 Difference]: Without dead ends: 9728 [2020-10-28 12:22:06,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:22:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9728 states. [2020-10-28 12:22:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9728 to 9603. [2020-10-28 12:22:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9603 states. [2020-10-28 12:22:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9603 states to 9603 states and 13023 transitions. [2020-10-28 12:22:07,110 INFO L78 Accepts]: Start accepts. Automaton has 9603 states and 13023 transitions. Word has length 104 [2020-10-28 12:22:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:07,111 INFO L481 AbstractCegarLoop]: Abstraction has 9603 states and 13023 transitions. [2020-10-28 12:22:07,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 9603 states and 13023 transitions. [2020-10-28 12:22:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-28 12:22:07,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:07,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:07,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:22:07,117 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:07,118 INFO L82 PathProgramCache]: Analyzing trace with hash -570126330, now seen corresponding path program 1 times [2020-10-28 12:22:07,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:07,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726697438] [2020-10-28 12:22:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:08,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:08,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 12:22:08,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:22:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-28 12:22:08,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:08,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:22:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:22:08,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:08,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:08,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:08,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:08,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:22:08,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:08,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:08,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:08,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:08,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:08,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:22:08,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:08,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 12:22:08,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:08,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:22:08,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:08,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:22:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:09,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:09,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:22:09,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:22:09,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 12:22:09,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:09,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:22:09,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 85 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:22:09,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726697438] [2020-10-28 12:22:09,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:09,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:22:09,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704588107] [2020-10-28 12:22:09,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:22:09,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:09,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:22:09,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:22:09,294 INFO L87 Difference]: Start difference. First operand 9603 states and 13023 transitions. Second operand 8 states. [2020-10-28 12:22:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:48,950 INFO L93 Difference]: Finished difference Result 46525 states and 69423 transitions. [2020-10-28 12:22:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:22:48,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-10-28 12:22:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:49,179 INFO L225 Difference]: With dead ends: 46525 [2020-10-28 12:22:49,180 INFO L226 Difference]: Without dead ends: 36928 [2020-10-28 12:22:49,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:22:49,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36928 states. [2020-10-28 12:22:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36928 to 32243. [2020-10-28 12:22:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32243 states. [2020-10-28 12:22:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32243 states to 32243 states and 44513 transitions. [2020-10-28 12:22:50,769 INFO L78 Accepts]: Start accepts. Automaton has 32243 states and 44513 transitions. Word has length 206 [2020-10-28 12:22:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:50,769 INFO L481 AbstractCegarLoop]: Abstraction has 32243 states and 44513 transitions. [2020-10-28 12:22:50,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:22:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 32243 states and 44513 transitions. [2020-10-28 12:22:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-28 12:22:50,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:50,779 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:50,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:22:50,779 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash 8351288, now seen corresponding path program 1 times [2020-10-28 12:22:50,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:50,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958144956] [2020-10-28 12:22:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:51,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-28 12:22:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:22:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-10-28 12:22:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:52,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:22:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:22:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:52,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:52,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:52,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:22:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:52,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:52,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:53,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:53,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:22:53,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:22:53,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:53,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:22:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:22:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:53,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:53,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:22:53,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-28 12:22:53,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:53,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:22:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:22:53,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958144956] [2020-10-28 12:22:53,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:53,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:22:53,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735523840] [2020-10-28 12:22:53,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:53,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:53,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:53,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:53,717 INFO L87 Difference]: Start difference. First operand 32243 states and 44513 transitions. Second operand 7 states. [2020-10-28 12:22:54,459 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:23:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:13,809 INFO L93 Difference]: Finished difference Result 66323 states and 91982 transitions. [2020-10-28 12:23:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:23:13,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-28 12:23:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:13,923 INFO L225 Difference]: With dead ends: 66323 [2020-10-28 12:23:13,923 INFO L226 Difference]: Without dead ends: 30764 [2020-10-28 12:23:14,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:23:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30764 states. [2020-10-28 12:23:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30764 to 29888. [2020-10-28 12:23:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29888 states. [2020-10-28 12:23:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29888 states to 29888 states and 36217 transitions. [2020-10-28 12:23:14,892 INFO L78 Accepts]: Start accepts. Automaton has 29888 states and 36217 transitions. Word has length 275 [2020-10-28 12:23:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:14,893 INFO L481 AbstractCegarLoop]: Abstraction has 29888 states and 36217 transitions. [2020-10-28 12:23:14,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:23:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 29888 states and 36217 transitions. [2020-10-28 12:23:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-28 12:23:14,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:14,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:23:14,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:23:14,905 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash 578348912, now seen corresponding path program 1 times [2020-10-28 12:23:14,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:14,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727841849] [2020-10-28 12:23:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:20,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-28 12:23:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:23:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 12:23:20,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:20,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:23:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:23:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:20,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:20,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:20,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:20,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:23:20,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:20,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:20,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:20,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:23:20,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:23:20,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:20,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:23:20,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:20,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:23:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:20,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:20,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:23:20,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-28 12:23:20,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:20,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:23:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:23:21,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727841849] [2020-10-28 12:23:21,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:21,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:23:21,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660544992] [2020-10-28 12:23:21,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:23:21,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:21,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:23:21,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:21,464 INFO L87 Difference]: Start difference. First operand 29888 states and 36217 transitions. Second operand 7 states. [2020-10-28 12:23:25,878 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:23:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:43,252 INFO L93 Difference]: Finished difference Result 74986 states and 95055 transitions. [2020-10-28 12:23:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:23:43,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-10-28 12:23:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:43,444 INFO L225 Difference]: With dead ends: 74986 [2020-10-28 12:23:43,445 INFO L226 Difference]: Without dead ends: 45096 [2020-10-28 12:23:43,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:23:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45096 states. [2020-10-28 12:23:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45096 to 44777. [2020-10-28 12:23:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44777 states. [2020-10-28 12:23:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44777 states to 44777 states and 54422 transitions. [2020-10-28 12:23:44,763 INFO L78 Accepts]: Start accepts. Automaton has 44777 states and 54422 transitions. Word has length 348 [2020-10-28 12:23:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:44,764 INFO L481 AbstractCegarLoop]: Abstraction has 44777 states and 54422 transitions. [2020-10-28 12:23:44,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:23:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 44777 states and 54422 transitions. [2020-10-28 12:23:44,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-28 12:23:44,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:44,776 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 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] [2020-10-28 12:23:44,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:23:44,776 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:44,777 INFO L82 PathProgramCache]: Analyzing trace with hash -763541751, now seen corresponding path program 1 times [2020-10-28 12:23:44,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:44,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733227216] [2020-10-28 12:23:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:47,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:50,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:50,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-28 12:23:50,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:23:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:23:50,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:50,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 12:23:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:23:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:50,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:50,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:50,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:50,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:23:50,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:50,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:50,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:50,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:23:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:23:50,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:50,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:23:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:50,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:50,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:23:50,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:23:50,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:50,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:23:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:50,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 12:23:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:50,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:51,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:23:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-28 12:23:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:51,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:23:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 217 proven. 16 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 12:23:51,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733227216] [2020-10-28 12:23:51,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:51,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:23:51,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086701921] [2020-10-28 12:23:51,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:23:51,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:51,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:23:51,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:51,262 INFO L87 Difference]: Start difference. First operand 44777 states and 54422 transitions. Second operand 7 states. [2020-10-28 12:24:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:19,263 INFO L93 Difference]: Finished difference Result 163986 states and 210734 transitions. [2020-10-28 12:24:19,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:24:19,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-28 12:24:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:19,770 INFO L225 Difference]: With dead ends: 163986 [2020-10-28 12:24:19,771 INFO L226 Difference]: Without dead ends: 119982 [2020-10-28 12:24:19,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:24:20,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119982 states. [2020-10-28 12:24:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119982 to 113007. [2020-10-28 12:24:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113007 states. [2020-10-28 12:24:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113007 states to 113007 states and 144743 transitions. [2020-10-28 12:24:24,039 INFO L78 Accepts]: Start accepts. Automaton has 113007 states and 144743 transitions. Word has length 359 [2020-10-28 12:24:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:24,040 INFO L481 AbstractCegarLoop]: Abstraction has 113007 states and 144743 transitions. [2020-10-28 12:24:24,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:24:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 113007 states and 144743 transitions. [2020-10-28 12:24:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-28 12:24:24,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:24,063 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:24:24,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:24:24,064 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:24,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash 189642673, now seen corresponding path program 1 times [2020-10-28 12:24:24,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:24,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593274474] [2020-10-28 12:24:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:24,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:29,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:29,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-28 12:24:29,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:24:29,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 12:24:29,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:29,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:24:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-28 12:24:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:29,485 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:24:29,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:29,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:29,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:29,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:24:29,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:29,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:29,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:29,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:29,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:24:29,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:29,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:24:29,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:29,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:24:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:29,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:24:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:30,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:30,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:30,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 12:24:30,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-28 12:24:30,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:30,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 12:24:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-28 12:24:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:30,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:24:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:24:30,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:30,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:24:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:24:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 201 proven. 4 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-28 12:24:30,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593274474] [2020-10-28 12:24:30,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:30,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:24:30,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485858211] [2020-10-28 12:24:30,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:24:30,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:30,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:24:30,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:24:30,690 INFO L87 Difference]: Start difference. First operand 113007 states and 144743 transitions. Second operand 7 states.