/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:57:41,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:57:41,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:57:41,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:57:41,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:57:41,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:57:41,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:57:41,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:57:41,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:57:41,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:57:41,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:57:41,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:57:41,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:57:41,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:57:41,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:57:41,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:57:41,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:57:41,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:57:41,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:57:41,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:57:41,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:57:41,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:57:41,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:57:41,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:57:41,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:57:41,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:57:41,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:57:41,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:57:41,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:57:41,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:57:41,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:57:41,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:57:41,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:57:41,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:57:41,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:57:41,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:57:41,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:57:41,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:57:41,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:57:41,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:57:41,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:57:41,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:57:41,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:57:41,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:57:41,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:57:41,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:57:41,751 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:57:41,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:57:41,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:57:41,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:57:41,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:57:41,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:57:41,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:57:41,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:57:41,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:57:41,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:57:41,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:57:41,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:57:41,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:57:41,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:57:41,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:57:41,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:57:41,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:57:41,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:57:41,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:57:41,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:57:41,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:57:41,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:57:41,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:57:41,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:57:41,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:57:41,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:57:42,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:57:42,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:57:42,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:57:42,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:57:42,251 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:57:42,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-29 06:57:42,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32a6d3eed/64d75ce72a2c47b88a35957f1936004d/FLAGa50c4f32f [2020-10-29 06:57:43,344 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:57:43,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-29 06:57:43,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32a6d3eed/64d75ce72a2c47b88a35957f1936004d/FLAGa50c4f32f [2020-10-29 06:57:43,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32a6d3eed/64d75ce72a2c47b88a35957f1936004d [2020-10-29 06:57:43,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:57:43,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:57:43,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:57:43,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:57:43,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:57:43,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:57:43" (1/1) ... [2020-10-29 06:57:43,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b49fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:43, skipping insertion in model container [2020-10-29 06:57:43,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:57:43" (1/1) ... [2020-10-29 06:57:43,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:57:44,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:57:45,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:57:45,700 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:57:46,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:57:46,589 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:57:46,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46 WrapperNode [2020-10-29 06:57:46,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:57:46,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:57:46,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:57:46,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:57:46,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (1/1) ... [2020-10-29 06:57:46,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (1/1) ... [2020-10-29 06:57:46,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (1/1) ... [2020-10-29 06:57:46,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (1/1) ... [2020-10-29 06:57:46,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (1/1) ... [2020-10-29 06:57:46,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (1/1) ... [2020-10-29 06:57:46,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (1/1) ... [2020-10-29 06:57:46,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:57:46,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:57:46,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:57:46,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:57:46,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:57:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:57:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:57:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:57:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:57:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:57:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:57:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:57:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:57:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:57:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:57:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:57:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:57:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:57:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:57:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:57:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:57:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:57:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:57:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:57:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:57:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:57:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:57:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:57:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:57:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:57:52,885 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:57:52,886 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:57:52,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:57:52 BoogieIcfgContainer [2020-10-29 06:57:52,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:57:52,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:57:52,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:57:52,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:57:52,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:57:43" (1/3) ... [2020-10-29 06:57:52,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57815a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:57:52, skipping insertion in model container [2020-10-29 06:57:52,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:46" (2/3) ... [2020-10-29 06:57:52,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57815a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:57:52, skipping insertion in model container [2020-10-29 06:57:52,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:57:52" (3/3) ... [2020-10-29 06:57:52,908 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2020-10-29 06:57:52,931 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:57:52,940 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:57:52,958 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:57:53,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:57:53,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:57:53,014 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:57:53,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:57:53,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:57:53,014 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:57:53,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:57:53,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:57:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:57:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 06:57:53,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:53,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:57:53,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:53,106 INFO L82 PathProgramCache]: Analyzing trace with hash 174221132, now seen corresponding path program 1 times [2020-10-29 06:57:53,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:53,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841351652] [2020-10-29 06:57:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:54,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:57:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-29 06:57:54,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:54,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 06:57:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 06:57:54,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 06:57:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:54,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:57:54,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841351652] [2020-10-29 06:57:54,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:57:54,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:57:54,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686872440] [2020-10-29 06:57:54,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:57:54,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:54,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:57:54,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:57:54,384 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:58:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:06,000 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-29 06:58:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:58:06,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-29 06:58:06,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:06,035 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:58:06,036 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:58:06,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:58:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:58:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-29 06:58:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-29 06:58:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-29 06:58:06,255 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 60 [2020-10-29 06:58:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:06,257 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-29 06:58:06,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:58:06,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-29 06:58:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 06:58:06,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:06,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:58:06,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:58:06,283 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:06,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash -816694262, now seen corresponding path program 1 times [2020-10-29 06:58:06,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:06,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606049297] [2020-10-29 06:58:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:06,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:08,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 06:58:08,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:58:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1819 [2020-10-29 06:58:08,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:08,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:58:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 06:58:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 06:58:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:08,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:08,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:08,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 06:58:08,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:08,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:08,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:08,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:08,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:58:08,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:08,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 06:58:08,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:08,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:08,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:08,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:08,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:58:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:58:08,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606049297] [2020-10-29 06:58:08,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:08,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:58:08,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045030465] [2020-10-29 06:58:08,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:58:08,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:08,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:58:08,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:58:08,796 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 6 states. [2020-10-29 06:58:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:21,714 INFO L93 Difference]: Finished difference Result 4718 states and 7355 transitions. [2020-10-29 06:58:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:58:21,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-29 06:58:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:21,735 INFO L225 Difference]: With dead ends: 4718 [2020-10-29 06:58:21,736 INFO L226 Difference]: Without dead ends: 3168 [2020-10-29 06:58:21,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:58:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2020-10-29 06:58:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 3138. [2020-10-29 06:58:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-10-29 06:58:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4302 transitions. [2020-10-29 06:58:21,856 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4302 transitions. Word has length 135 [2020-10-29 06:58:21,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:21,857 INFO L481 AbstractCegarLoop]: Abstraction has 3138 states and 4302 transitions. [2020-10-29 06:58:21,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:58:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4302 transitions. [2020-10-29 06:58:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 06:58:21,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:21,860 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:58:21,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:58:21,860 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:21,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:21,861 INFO L82 PathProgramCache]: Analyzing trace with hash 426561854, now seen corresponding path program 1 times [2020-10-29 06:58:21,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:21,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635942981] [2020-10-29 06:58:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:21,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:23,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:23,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 06:58:23,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-29 06:58:23,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:23,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:58:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:23,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:23,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:23,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:58:23,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:23,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:23,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:23,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:23,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:23,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:23,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 06:58:23,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:58:23,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:23,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:58:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:58:23,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635942981] [2020-10-29 06:58:23,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:58:23,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:58:23,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131099365] [2020-10-29 06:58:23,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:23,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:23,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:23,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:23,452 INFO L87 Difference]: Start difference. First operand 3138 states and 4302 transitions. Second operand 7 states. [2020-10-29 06:58:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:38,379 INFO L93 Difference]: Finished difference Result 9574 states and 13421 transitions. [2020-10-29 06:58:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:58:38,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-29 06:58:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:38,421 INFO L225 Difference]: With dead ends: 9574 [2020-10-29 06:58:38,422 INFO L226 Difference]: Without dead ends: 6442 [2020-10-29 06:58:38,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:58:38,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6442 states. [2020-10-29 06:58:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6442 to 6375. [2020-10-29 06:58:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6375 states. [2020-10-29 06:58:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6375 states to 6375 states and 8239 transitions. [2020-10-29 06:58:38,627 INFO L78 Accepts]: Start accepts. Automaton has 6375 states and 8239 transitions. Word has length 141 [2020-10-29 06:58:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:38,628 INFO L481 AbstractCegarLoop]: Abstraction has 6375 states and 8239 transitions. [2020-10-29 06:58:38,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:58:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6375 states and 8239 transitions. [2020-10-29 06:58:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 06:58:38,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:38,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:58:38,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:58:38,631 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:38,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:38,632 INFO L82 PathProgramCache]: Analyzing trace with hash -468626250, now seen corresponding path program 1 times [2020-10-29 06:58:38,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:38,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590405594] [2020-10-29 06:58:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:39,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:39,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 06:58:39,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-29 06:58:39,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:39,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 06:58:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:39,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:39,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:39,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:39,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:39,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:58:39,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:39,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:39,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:39,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:58:39,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 06:58:39,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:39,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:58:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:58:39,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590405594] [2020-10-29 06:58:39,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:58:39,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:58:39,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247385904] [2020-10-29 06:58:39,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:39,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:39,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:39,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:39,948 INFO L87 Difference]: Start difference. First operand 6375 states and 8239 transitions. Second operand 7 states. [2020-10-29 06:58:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:54,218 INFO L93 Difference]: Finished difference Result 19524 states and 25894 transitions. [2020-10-29 06:58:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:58:54,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-29 06:58:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:54,287 INFO L225 Difference]: With dead ends: 19524 [2020-10-29 06:58:54,287 INFO L226 Difference]: Without dead ends: 13155 [2020-10-29 06:58:54,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:58:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13155 states. [2020-10-29 06:58:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13155 to 11461. [2020-10-29 06:58:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11461 states. [2020-10-29 06:58:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11461 states to 11461 states and 14517 transitions. [2020-10-29 06:58:54,624 INFO L78 Accepts]: Start accepts. Automaton has 11461 states and 14517 transitions. Word has length 145 [2020-10-29 06:58:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:54,625 INFO L481 AbstractCegarLoop]: Abstraction has 11461 states and 14517 transitions. [2020-10-29 06:58:54,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:58:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 11461 states and 14517 transitions. [2020-10-29 06:58:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 06:58:54,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:54,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:58:54,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:58:54,630 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:54,630 INFO L82 PathProgramCache]: Analyzing trace with hash 417009700, now seen corresponding path program 1 times [2020-10-29 06:58:54,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:54,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364996532] [2020-10-29 06:58:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:54,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:56,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:56,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 06:58:56,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2023 [2020-10-29 06:58:56,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:56,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:58:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:56,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:58:56,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:56,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:57,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:57,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:58:57,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:57,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 06:58:57,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:57,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:57,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 06:58:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 06:58:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:58:57,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364996532] [2020-10-29 06:58:57,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:58:57,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:58:57,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110531032] [2020-10-29 06:58:57,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:57,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:57,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:57,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:57,512 INFO L87 Difference]: Start difference. First operand 11461 states and 14517 transitions. Second operand 7 states. [2020-10-29 06:59:11,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:11,500 INFO L93 Difference]: Finished difference Result 28214 states and 35519 transitions. [2020-10-29 06:59:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:59:11,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-29 06:59:11,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:11,581 INFO L225 Difference]: With dead ends: 28214 [2020-10-29 06:59:11,581 INFO L226 Difference]: Without dead ends: 16759 [2020-10-29 06:59:11,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:59:11,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2020-10-29 06:59:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 16520. [2020-10-29 06:59:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16520 states. [2020-10-29 06:59:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16520 states to 16520 states and 20315 transitions. [2020-10-29 06:59:12,087 INFO L78 Accepts]: Start accepts. Automaton has 16520 states and 20315 transitions. Word has length 208 [2020-10-29 06:59:12,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:12,089 INFO L481 AbstractCegarLoop]: Abstraction has 16520 states and 20315 transitions. [2020-10-29 06:59:12,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand 16520 states and 20315 transitions. [2020-10-29 06:59:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 06:59:12,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:12,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:59:12,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:59:12,096 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:12,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:12,096 INFO L82 PathProgramCache]: Analyzing trace with hash 544855040, now seen corresponding path program 1 times [2020-10-29 06:59:12,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:12,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703798968] [2020-10-29 06:59:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:12,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:13,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:13,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 06:59:13,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:13,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-10-29 06:59:13,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:13,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:59:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 06:59:13,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:13,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:13,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:13,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:59:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:13,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:13,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:13,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:13,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:59:13,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 06:59:13,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:13,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:59:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:59:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:14,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:59:14,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 06:59:14,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:14,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:59:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:59:14,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703798968] [2020-10-29 06:59:14,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:14,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:59:14,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414858305] [2020-10-29 06:59:14,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:14,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:14,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:14,507 INFO L87 Difference]: Start difference. First operand 16520 states and 20315 transitions. Second operand 7 states. [2020-10-29 06:59:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:29,956 INFO L93 Difference]: Finished difference Result 39815 states and 50887 transitions. [2020-10-29 06:59:29,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:59:29,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-29 06:59:29,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:30,032 INFO L225 Difference]: With dead ends: 39815 [2020-10-29 06:59:30,032 INFO L226 Difference]: Without dead ends: 20851 [2020-10-29 06:59:30,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:59:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20851 states. [2020-10-29 06:59:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20851 to 20593. [2020-10-29 06:59:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20593 states. [2020-10-29 06:59:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20593 states to 20593 states and 24417 transitions. [2020-10-29 06:59:30,558 INFO L78 Accepts]: Start accepts. Automaton has 20593 states and 24417 transitions. Word has length 248 [2020-10-29 06:59:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:30,559 INFO L481 AbstractCegarLoop]: Abstraction has 20593 states and 24417 transitions. [2020-10-29 06:59:30,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 20593 states and 24417 transitions. [2020-10-29 06:59:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 06:59:30,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:30,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:59:30,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:59:30,565 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:30,566 INFO L82 PathProgramCache]: Analyzing trace with hash 755969880, now seen corresponding path program 1 times [2020-10-29 06:59:30,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:30,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200586947] [2020-10-29 06:59:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:33,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 06:59:33,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:59:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2653 [2020-10-29 06:59:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:33,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:59:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 06:59:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:33,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:33,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:59:33,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:33,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:33,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:33,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:33,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:59:33,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 06:59:33,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:33,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:59:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:59:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:33,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:33,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:59:33,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 06:59:33,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:33,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:59:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:59:33,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200586947] [2020-10-29 06:59:33,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:33,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:59:33,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530552168] [2020-10-29 06:59:33,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:59:33,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:33,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:59:33,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:33,975 INFO L87 Difference]: Start difference. First operand 20593 states and 24417 transitions. Second operand 6 states. [2020-10-29 06:59:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:56,632 INFO L93 Difference]: Finished difference Result 60331 states and 75762 transitions. [2020-10-29 06:59:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:59:56,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 280 [2020-10-29 06:59:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:56,763 INFO L225 Difference]: With dead ends: 60331 [2020-10-29 06:59:56,764 INFO L226 Difference]: Without dead ends: 38134 [2020-10-29 06:59:56,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:59:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38134 states. [2020-10-29 06:59:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38134 to 37293. [2020-10-29 06:59:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37293 states. [2020-10-29 06:59:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37293 states to 37293 states and 44869 transitions. [2020-10-29 06:59:57,642 INFO L78 Accepts]: Start accepts. Automaton has 37293 states and 44869 transitions. Word has length 280 [2020-10-29 06:59:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:57,642 INFO L481 AbstractCegarLoop]: Abstraction has 37293 states and 44869 transitions. [2020-10-29 06:59:57,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:59:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 37293 states and 44869 transitions. [2020-10-29 06:59:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-29 06:59:57,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:57,649 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:59:57,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:59:57,649 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:57,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1710621052, now seen corresponding path program 1 times [2020-10-29 06:59:57,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:57,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679540569] [2020-10-29 06:59:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:58,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:00,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:00,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 07:00:00,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:00:00,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2432 [2020-10-29 07:00:00,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:00,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:00,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:00,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:00:00,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:00:00,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:00,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:00,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:00,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:00,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:00:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:00,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:00,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:00,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:00,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:00:00,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:00:00,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:00,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:00:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:00,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:00:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:01,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:01,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:00:01,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 07:00:01,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:01,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:00:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 07:00:01,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679540569] [2020-10-29 07:00:01,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:01,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:00:01,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703094261] [2020-10-29 07:00:01,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:00:01,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:00:01,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:00:01,216 INFO L87 Difference]: Start difference. First operand 37293 states and 44869 transitions. Second operand 6 states. [2020-10-29 07:00:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:26,320 INFO L93 Difference]: Finished difference Result 117664 states and 150101 transitions. [2020-10-29 07:00:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:00:26,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 298 [2020-10-29 07:00:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:26,610 INFO L225 Difference]: With dead ends: 117664 [2020-10-29 07:00:26,611 INFO L226 Difference]: Without dead ends: 78764 [2020-10-29 07:00:26,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:00:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78764 states. [2020-10-29 07:00:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78764 to 74888. [2020-10-29 07:00:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74888 states. [2020-10-29 07:00:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74888 states to 74888 states and 95785 transitions. [2020-10-29 07:00:29,391 INFO L78 Accepts]: Start accepts. Automaton has 74888 states and 95785 transitions. Word has length 298 [2020-10-29 07:00:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:29,392 INFO L481 AbstractCegarLoop]: Abstraction has 74888 states and 95785 transitions. [2020-10-29 07:00:29,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:00:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 74888 states and 95785 transitions. [2020-10-29 07:00:29,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-29 07:00:29,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:29,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:00:29,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:00:29,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash 254294950, now seen corresponding path program 1 times [2020-10-29 07:00:29,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:29,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323333442] [2020-10-29 07:00:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:30,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:30,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-29 07:00:30,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-29 07:00:30,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:30,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-29 07:00:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 07:00:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:30,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:30,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:30,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:30,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:00:30,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:30,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:30,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:30,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:30,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:30,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:00:30,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:30,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:00:30,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:30,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:30,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:30,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:30,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:00:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:30,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:30,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:00:30,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 07:00:30,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:30,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:00:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-29 07:00:30,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323333442] [2020-10-29 07:00:30,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:30,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:00:30,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453354748] [2020-10-29 07:00:30,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:00:30,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:30,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:00:30,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:00:30,958 INFO L87 Difference]: Start difference. First operand 74888 states and 95785 transitions. Second operand 5 states. [2020-10-29 07:00:32,497 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:00:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:49,564 INFO L93 Difference]: Finished difference Result 179873 states and 238876 transitions. [2020-10-29 07:00:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:00:49,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2020-10-29 07:00:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:50,188 INFO L225 Difference]: With dead ends: 179873 [2020-10-29 07:00:50,188 INFO L226 Difference]: Without dead ends: 104991 [2020-10-29 07:00:50,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:00:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104991 states. [2020-10-29 07:00:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104991 to 98037. [2020-10-29 07:00:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98037 states. [2020-10-29 07:00:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98037 states to 98037 states and 123228 transitions. [2020-10-29 07:00:53,754 INFO L78 Accepts]: Start accepts. Automaton has 98037 states and 123228 transitions. Word has length 345 [2020-10-29 07:00:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:53,755 INFO L481 AbstractCegarLoop]: Abstraction has 98037 states and 123228 transitions. [2020-10-29 07:00:53,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:00:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 98037 states and 123228 transitions. [2020-10-29 07:00:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-29 07:00:53,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:53,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:00:53,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:00:53,777 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:53,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1719442282, now seen corresponding path program 1 times [2020-10-29 07:00:53,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:53,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490806158] [2020-10-29 07:00:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:56,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:56,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-29 07:00:56,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2661 [2020-10-29 07:00:56,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:56,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:00:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 07:00:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:56,826 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:00:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:56,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:00:56,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:56,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:56,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:57,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:57,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:00:57,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 07:00:57,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:57,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:00:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:00:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:57,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:57,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:00:57,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:57,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 07:00:57,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:57,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:57,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:00:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:00:57,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490806158] [2020-10-29 07:00:57,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:57,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:00:57,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105205698] [2020-10-29 07:00:57,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:57,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:57,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:57,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:57,997 INFO L87 Difference]: Start difference. First operand 98037 states and 123228 transitions. Second operand 7 states. [2020-10-29 07:00:59,694 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:01:03,352 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 69