/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:47:36,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:47:36,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:47:36,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:47:36,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:47:36,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:47:36,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:47:36,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:47:36,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:47:36,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:47:36,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:47:36,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:47:36,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:47:36,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:47:36,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:47:36,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:47:36,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:47:36,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:47:36,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:47:36,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:47:36,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:47:36,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:47:36,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:47:36,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:47:36,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:47:36,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:47:36,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:47:36,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:47:36,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:47:36,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:47:36,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:47:36,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:47:36,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:47:36,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:47:36,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:47:36,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:47:36,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:47:36,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:47:36,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:47:36,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:47:36,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:47:36,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 19:47:36,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:47:36,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:47:36,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:47:36,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:47:36,854 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:47:36,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:47:36,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:47:36,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:47:36,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:47:36,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:47:36,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:47:36,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:47:36,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:47:36,858 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:47:36,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:47:36,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:47:36,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:47:36,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:47:36,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:47:36,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:47:36,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:47:36,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:47:36,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:47:36,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:47:36,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:47:36,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:47:36,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:47:36,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:47:36,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:47:36,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:47:37,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:47:37,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:47:37,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:47:37,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:47:37,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:47:37,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c [2020-10-28 19:47:37,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8479f9ab/aeb1c7224c274afbb8ce0967ef9510df/FLAGa8cb035dd [2020-10-28 19:47:38,031 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:47:38,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c [2020-10-28 19:47:38,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8479f9ab/aeb1c7224c274afbb8ce0967ef9510df/FLAGa8cb035dd [2020-10-28 19:47:38,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8479f9ab/aeb1c7224c274afbb8ce0967ef9510df [2020-10-28 19:47:38,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:47:38,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:47:38,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:47:38,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:47:38,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:47:38,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:38,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fecc52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38, skipping insertion in model container [2020-10-28 19:47:38,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:38,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:47:38,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:47:38,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:47:38,727 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:47:38,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:47:38,943 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:47:38,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38 WrapperNode [2020-10-28 19:47:38,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:47:38,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:47:38,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:47:38,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:47:38,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:38,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:38,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:38,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:39,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:39,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:39,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (1/1) ... [2020-10-28 19:47:39,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:47:39,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:47:39,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:47:39,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:47:39,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:47:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:47:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:47:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:47:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 19:47:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-28 19:47:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-28 19:47:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-28 19:47:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-28 19:47:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 19:47:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 19:47:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:47:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:47:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:47:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:47:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:47:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 19:47:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 19:47:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-28 19:47:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-28 19:47:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-28 19:47:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-28 19:47:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 19:47:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 19:47:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:47:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:47:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:47:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:47:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:47:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:47:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:47:40,554 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:47:40,555 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-28 19:47:40,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:47:40 BoogieIcfgContainer [2020-10-28 19:47:40,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:47:40,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:47:40,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:47:40,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:47:40,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:47:38" (1/3) ... [2020-10-28 19:47:40,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd62b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:47:40, skipping insertion in model container [2020-10-28 19:47:40,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:47:38" (2/3) ... [2020-10-28 19:47:40,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd62b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:47:40, skipping insertion in model container [2020-10-28 19:47:40,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:47:40" (3/3) ... [2020-10-28 19:47:40,568 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2020-10-28 19:47:40,580 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:47:40,585 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:47:40,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:47:40,627 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:47:40,627 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:47:40,627 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:47:40,628 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:47:40,628 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:47:40,628 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:47:40,628 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:47:40,628 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:47:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-10-28 19:47:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 19:47:40,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:47:40,667 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] [2020-10-28 19:47:40,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:47:40,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:47:40,675 INFO L82 PathProgramCache]: Analyzing trace with hash -635908971, now seen corresponding path program 1 times [2020-10-28 19:47:40,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:47:40,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058375647] [2020-10-28 19:47:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:47:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:47:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:41,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:46,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:47:46,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 19:47:46,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:47:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 19:47:46,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:47:46,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:47:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:47:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:47:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:47:46,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:47:46,479 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:47:46,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:47:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:47:46,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:46,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:47:46,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:47:46,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:47:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:47:46,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:47:46,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:47:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:47:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:47:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:47:46,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:47:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:47:46,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058375647] [2020-10-28 19:47:46,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:47:46,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 19:47:46,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097856177] [2020-10-28 19:47:46,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 19:47:46,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:47:46,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 19:47:46,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 19:47:46,582 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2020-10-28 19:47:48,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:47:48,248 INFO L93 Difference]: Finished difference Result 640 states and 1137 transitions. [2020-10-28 19:47:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 19:47:48,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-10-28 19:47:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:47:48,268 INFO L225 Difference]: With dead ends: 640 [2020-10-28 19:47:48,268 INFO L226 Difference]: Without dead ends: 349 [2020-10-28 19:47:48,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 19:47:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-28 19:47:48,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 298. [2020-10-28 19:47:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-28 19:47:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 501 transitions. [2020-10-28 19:47:48,426 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 501 transitions. Word has length 40 [2020-10-28 19:47:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:47:48,427 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 501 transitions. [2020-10-28 19:47:48,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 19:47:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 501 transitions. [2020-10-28 19:47:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 19:47:48,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:47:48,442 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] [2020-10-28 19:47:48,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:47:48,443 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:47:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:47:48,445 INFO L82 PathProgramCache]: Analyzing trace with hash 185496374, now seen corresponding path program 1 times [2020-10-28 19:47:48,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:47:48,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690351078] [2020-10-28 19:47:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:47:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:47:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:48,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:49,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:50,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:53,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:47:53,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 19:47:53,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:47:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:47:53,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:47:53,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:47:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:47:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 19:47:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:47:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:47:53,803 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:47:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:47:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:47:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:53,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:47:53,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:47:53,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:47:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:47:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:47:53,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:47:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:47:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:47:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:47:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:47:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:47:53,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690351078] [2020-10-28 19:47:53,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:47:53,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:47:53,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463395233] [2020-10-28 19:47:53,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:47:53,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:47:53,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:47:53,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:47:53,851 INFO L87 Difference]: Start difference. First operand 298 states and 501 transitions. Second operand 4 states. [2020-10-28 19:47:54,077 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:47:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:47:56,119 INFO L93 Difference]: Finished difference Result 863 states and 1428 transitions. [2020-10-28 19:47:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:47:56,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-28 19:47:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:47:56,127 INFO L225 Difference]: With dead ends: 863 [2020-10-28 19:47:56,127 INFO L226 Difference]: Without dead ends: 576 [2020-10-28 19:47:56,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:47:56,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-28 19:47:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 507. [2020-10-28 19:47:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-28 19:47:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 842 transitions. [2020-10-28 19:47:56,245 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 842 transitions. Word has length 41 [2020-10-28 19:47:56,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:47:56,245 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 842 transitions. [2020-10-28 19:47:56,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:47:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 842 transitions. [2020-10-28 19:47:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 19:47:56,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:47:56,254 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] [2020-10-28 19:47:56,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:47:56,254 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:47:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:47:56,255 INFO L82 PathProgramCache]: Analyzing trace with hash 314547398, now seen corresponding path program 1 times [2020-10-28 19:47:56,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:47:56,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131702784] [2020-10-28 19:47:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:47:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:47:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:56,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:47:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:01,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:01,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 19:48:01,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:48:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 19:48:01,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:01,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:48:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 19:48:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:48:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:48:01,537 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:01,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:01,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:01,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:01,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:01,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:01,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:48:01,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:01,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:01,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:01,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:01,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131702784] [2020-10-28 19:48:01,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:01,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:01,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989109352] [2020-10-28 19:48:01,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:01,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:01,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:01,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:01,582 INFO L87 Difference]: Start difference. First operand 507 states and 842 transitions. Second operand 4 states. [2020-10-28 19:48:01,800 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:48:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:03,750 INFO L93 Difference]: Finished difference Result 1280 states and 2110 transitions. [2020-10-28 19:48:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:03,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-28 19:48:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:03,762 INFO L225 Difference]: With dead ends: 1280 [2020-10-28 19:48:03,763 INFO L226 Difference]: Without dead ends: 785 [2020-10-28 19:48:03,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2020-10-28 19:48:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 708. [2020-10-28 19:48:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-10-28 19:48:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1155 transitions. [2020-10-28 19:48:03,853 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1155 transitions. Word has length 43 [2020-10-28 19:48:03,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:03,853 INFO L481 AbstractCegarLoop]: Abstraction has 708 states and 1155 transitions. [2020-10-28 19:48:03,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:48:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1155 transitions. [2020-10-28 19:48:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 19:48:03,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:03,857 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] [2020-10-28 19:48:03,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:48:03,858 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 345050654, now seen corresponding path program 1 times [2020-10-28 19:48:03,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:03,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436903737] [2020-10-28 19:48:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:04,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:07,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 19:48:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:48:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3284 [2020-10-28 19:48:07,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:07,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:48:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:48:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 19:48:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:07,440 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:07,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:07,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:07,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:07,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:48:07,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:07,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:07,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:07,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436903737] [2020-10-28 19:48:07,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:07,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:07,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980383386] [2020-10-28 19:48:07,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:07,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:07,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:07,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:07,487 INFO L87 Difference]: Start difference. First operand 708 states and 1155 transitions. Second operand 4 states. [2020-10-28 19:48:07,698 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:09,719 INFO L93 Difference]: Finished difference Result 2125 states and 3465 transitions. [2020-10-28 19:48:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:09,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-28 19:48:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:09,732 INFO L225 Difference]: With dead ends: 2125 [2020-10-28 19:48:09,732 INFO L226 Difference]: Without dead ends: 1438 [2020-10-28 19:48:09,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-10-28 19:48:09,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1310. [2020-10-28 19:48:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-10-28 19:48:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2085 transitions. [2020-10-28 19:48:09,897 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2085 transitions. Word has length 45 [2020-10-28 19:48:09,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:09,899 INFO L481 AbstractCegarLoop]: Abstraction has 1310 states and 2085 transitions. [2020-10-28 19:48:09,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:48:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2085 transitions. [2020-10-28 19:48:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 19:48:09,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:09,901 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] [2020-10-28 19:48:09,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:48:09,902 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:09,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash -658158923, now seen corresponding path program 1 times [2020-10-28 19:48:09,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:09,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111680833] [2020-10-28 19:48:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:12,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 19:48:12,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:48:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2663 [2020-10-28 19:48:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:12,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:48:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:48:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 19:48:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:12,811 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:12,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:12,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:12,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:12,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:12,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:12,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:48:12,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:12,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:12,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:12,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:12,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:12,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:48:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:12,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111680833] [2020-10-28 19:48:12,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:12,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:12,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457092613] [2020-10-28 19:48:12,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:12,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:12,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:12,844 INFO L87 Difference]: Start difference. First operand 1310 states and 2085 transitions. Second operand 4 states. [2020-10-28 19:48:13,037 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:14,520 INFO L93 Difference]: Finished difference Result 2711 states and 4333 transitions. [2020-10-28 19:48:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:14,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-28 19:48:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:14,532 INFO L225 Difference]: With dead ends: 2711 [2020-10-28 19:48:14,533 INFO L226 Difference]: Without dead ends: 1421 [2020-10-28 19:48:14,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2020-10-28 19:48:14,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1310. [2020-10-28 19:48:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-10-28 19:48:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2051 transitions. [2020-10-28 19:48:14,694 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2051 transitions. Word has length 45 [2020-10-28 19:48:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:14,694 INFO L481 AbstractCegarLoop]: Abstraction has 1310 states and 2051 transitions. [2020-10-28 19:48:14,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:48:14,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2051 transitions. [2020-10-28 19:48:14,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 19:48:14,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:14,698 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] [2020-10-28 19:48:14,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:48:14,699 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:14,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:14,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1312853539, now seen corresponding path program 1 times [2020-10-28 19:48:14,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:14,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875508089] [2020-10-28 19:48:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:14,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:14,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:15,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:17,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:17,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 19:48:17,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:48:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2283 [2020-10-28 19:48:17,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:17,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:48:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 19:48:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 19:48:17,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:48:17,227 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:17,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:17,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:17,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:17,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:17,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:48:17,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:17,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:17,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:17,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:48:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:17,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875508089] [2020-10-28 19:48:17,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:17,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:17,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950676771] [2020-10-28 19:48:17,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:17,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:17,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:17,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:17,259 INFO L87 Difference]: Start difference. First operand 1310 states and 2051 transitions. Second operand 4 states. [2020-10-28 19:48:17,454 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:19,516 INFO L93 Difference]: Finished difference Result 3170 states and 4989 transitions. [2020-10-28 19:48:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:19,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 19:48:19,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:19,532 INFO L225 Difference]: With dead ends: 3170 [2020-10-28 19:48:19,533 INFO L226 Difference]: Without dead ends: 1875 [2020-10-28 19:48:19,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-10-28 19:48:19,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1711. [2020-10-28 19:48:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-10-28 19:48:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2515 transitions. [2020-10-28 19:48:19,780 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2515 transitions. Word has length 47 [2020-10-28 19:48:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:19,781 INFO L481 AbstractCegarLoop]: Abstraction has 1711 states and 2515 transitions. [2020-10-28 19:48:19,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:48:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2515 transitions. [2020-10-28 19:48:19,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 19:48:19,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:19,782 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] [2020-10-28 19:48:19,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:48:19,783 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:19,783 INFO L82 PathProgramCache]: Analyzing trace with hash 393798283, now seen corresponding path program 1 times [2020-10-28 19:48:19,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:19,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494787712] [2020-10-28 19:48:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:20,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:21,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 19:48:21,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:48:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-10-28 19:48:21,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:21,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:48:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 19:48:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:48:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:21,648 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:21,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:21,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:21,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:21,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:48:21,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:21,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:21,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:21,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494787712] [2020-10-28 19:48:21,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:21,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:21,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070161207] [2020-10-28 19:48:21,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:21,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:21,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:21,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:21,677 INFO L87 Difference]: Start difference. First operand 1711 states and 2515 transitions. Second operand 4 states. [2020-10-28 19:48:21,955 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:24,181 INFO L93 Difference]: Finished difference Result 3963 states and 5904 transitions. [2020-10-28 19:48:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:24,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-28 19:48:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:24,200 INFO L225 Difference]: With dead ends: 3963 [2020-10-28 19:48:24,200 INFO L226 Difference]: Without dead ends: 2271 [2020-10-28 19:48:24,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-10-28 19:48:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2098. [2020-10-28 19:48:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2098 states. [2020-10-28 19:48:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3064 transitions. [2020-10-28 19:48:24,470 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3064 transitions. Word has length 49 [2020-10-28 19:48:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:24,471 INFO L481 AbstractCegarLoop]: Abstraction has 2098 states and 3064 transitions. [2020-10-28 19:48:24,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:48:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3064 transitions. [2020-10-28 19:48:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 19:48:24,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:24,473 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] [2020-10-28 19:48:24,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:48:24,474 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:24,474 INFO L82 PathProgramCache]: Analyzing trace with hash 457652226, now seen corresponding path program 1 times [2020-10-28 19:48:24,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:24,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183789369] [2020-10-28 19:48:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:24,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:26,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:26,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 19:48:26,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:48:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-28 19:48:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:26,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 19:48:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:48:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 19:48:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:26,418 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:26,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:26,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:26,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:48:26,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:26,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:48:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:26,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183789369] [2020-10-28 19:48:26,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:26,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:26,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029024315] [2020-10-28 19:48:26,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:26,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:26,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:26,465 INFO L87 Difference]: Start difference. First operand 2098 states and 3064 transitions. Second operand 4 states. [2020-10-28 19:48:26,682 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:28,714 INFO L93 Difference]: Finished difference Result 4770 states and 7074 transitions. [2020-10-28 19:48:28,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:28,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 19:48:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:28,735 INFO L225 Difference]: With dead ends: 4770 [2020-10-28 19:48:28,735 INFO L226 Difference]: Without dead ends: 2690 [2020-10-28 19:48:28,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2020-10-28 19:48:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2470. [2020-10-28 19:48:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2470 states. [2020-10-28 19:48:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3597 transitions. [2020-10-28 19:48:29,088 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3597 transitions. Word has length 50 [2020-10-28 19:48:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:29,089 INFO L481 AbstractCegarLoop]: Abstraction has 2470 states and 3597 transitions. [2020-10-28 19:48:29,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:48:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3597 transitions. [2020-10-28 19:48:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 19:48:29,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:29,091 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] [2020-10-28 19:48:29,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:48:29,091 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:29,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:29,092 INFO L82 PathProgramCache]: Analyzing trace with hash 170099848, now seen corresponding path program 1 times [2020-10-28 19:48:29,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:29,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219325493] [2020-10-28 19:48:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:29,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 19:48:31,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:48:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2798 [2020-10-28 19:48:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:48:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 19:48:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:48:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:32,164 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:32,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:32,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:32,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:32,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:48:32,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:32,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:32,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:48:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:32,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219325493] [2020-10-28 19:48:32,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:32,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:32,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068532966] [2020-10-28 19:48:32,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:32,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:32,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:32,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:32,201 INFO L87 Difference]: Start difference. First operand 2470 states and 3597 transitions. Second operand 4 states. [2020-10-28 19:48:32,435 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:34,806 INFO L93 Difference]: Finished difference Result 7139 states and 10657 transitions. [2020-10-28 19:48:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:34,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-28 19:48:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:34,840 INFO L225 Difference]: With dead ends: 7139 [2020-10-28 19:48:34,840 INFO L226 Difference]: Without dead ends: 4687 [2020-10-28 19:48:34,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:34,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2020-10-28 19:48:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4321. [2020-10-28 19:48:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4321 states. [2020-10-28 19:48:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 6307 transitions. [2020-10-28 19:48:35,402 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 6307 transitions. Word has length 54 [2020-10-28 19:48:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:35,403 INFO L481 AbstractCegarLoop]: Abstraction has 4321 states and 6307 transitions. [2020-10-28 19:48:35,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:48:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 6307 transitions. [2020-10-28 19:48:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 19:48:35,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:35,407 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] [2020-10-28 19:48:35,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:48:35,407 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:35,408 INFO L82 PathProgramCache]: Analyzing trace with hash 243993500, now seen corresponding path program 1 times [2020-10-28 19:48:35,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:35,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337636877] [2020-10-28 19:48:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:36,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:36,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 19:48:36,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:48:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-28 19:48:36,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:36,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 19:48:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:48:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 19:48:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:36,849 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:36,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:36,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:36,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:36,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 19:48:36,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:36,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:48:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:48:36,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:36,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337636877] [2020-10-28 19:48:36,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:36,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 19:48:36,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748082697] [2020-10-28 19:48:36,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:48:36,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:36,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:48:36,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:48:36,901 INFO L87 Difference]: Start difference. First operand 4321 states and 6307 transitions. Second operand 7 states. [2020-10-28 19:48:37,080 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:37,749 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 19:48:37,995 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:48:39,596 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:48:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:40,412 INFO L93 Difference]: Finished difference Result 10570 states and 16000 transitions. [2020-10-28 19:48:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 19:48:40,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-28 19:48:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:40,473 INFO L225 Difference]: With dead ends: 10570 [2020-10-28 19:48:40,474 INFO L226 Difference]: Without dead ends: 7684 [2020-10-28 19:48:40,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-28 19:48:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7684 states. [2020-10-28 19:48:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7684 to 6986. [2020-10-28 19:48:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6986 states. [2020-10-28 19:48:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6986 states to 6986 states and 10591 transitions. [2020-10-28 19:48:41,525 INFO L78 Accepts]: Start accepts. Automaton has 6986 states and 10591 transitions. Word has length 55 [2020-10-28 19:48:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:41,525 INFO L481 AbstractCegarLoop]: Abstraction has 6986 states and 10591 transitions. [2020-10-28 19:48:41,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 19:48:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6986 states and 10591 transitions. [2020-10-28 19:48:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 19:48:41,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:41,528 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] [2020-10-28 19:48:41,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:48:41,529 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash 453738454, now seen corresponding path program 1 times [2020-10-28 19:48:41,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:41,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834177574] [2020-10-28 19:48:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:41,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:41,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:41,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:44,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:44,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 19:48:44,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:48:44,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2570 [2020-10-28 19:48:44,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:44,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 19:48:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:48:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 19:48:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:44,370 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:44,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:44,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:44,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:44,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:44,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:48:44,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:44,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:48:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:44,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:48:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:44,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834177574] [2020-10-28 19:48:44,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:44,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 19:48:44,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766533711] [2020-10-28 19:48:44,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:48:44,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:44,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:48:44,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:48:44,419 INFO L87 Difference]: Start difference. First operand 6986 states and 10591 transitions. Second operand 7 states. [2020-10-28 19:48:44,626 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:45,363 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 19:48:45,613 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:48:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:48,130 INFO L93 Difference]: Finished difference Result 12512 states and 19005 transitions. [2020-10-28 19:48:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 19:48:48,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-28 19:48:48,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:48,174 INFO L225 Difference]: With dead ends: 12512 [2020-10-28 19:48:48,174 INFO L226 Difference]: Without dead ends: 7563 [2020-10-28 19:48:48,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-28 19:48:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7563 states. [2020-10-28 19:48:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7563 to 6890. [2020-10-28 19:48:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6890 states. [2020-10-28 19:48:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 10375 transitions. [2020-10-28 19:48:49,291 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 10375 transitions. Word has length 56 [2020-10-28 19:48:49,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:49,291 INFO L481 AbstractCegarLoop]: Abstraction has 6890 states and 10375 transitions. [2020-10-28 19:48:49,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 19:48:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 10375 transitions. [2020-10-28 19:48:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 19:48:49,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:49,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:48:49,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:48:49,298 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:49,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1634207734, now seen corresponding path program 1 times [2020-10-28 19:48:49,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:49,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502465755] [2020-10-28 19:48:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:49,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:49,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 19:48:49,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:48:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-28 19:48:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:49,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:48:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 19:48:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:48:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:49,835 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:49,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:49,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:49,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:48:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:49,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502465755] [2020-10-28 19:48:49,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:49,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:49,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176272474] [2020-10-28 19:48:49,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:49,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:49,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:49,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:49,865 INFO L87 Difference]: Start difference. First operand 6890 states and 10375 transitions. Second operand 4 states. [2020-10-28 19:48:50,274 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:48:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:53,124 INFO L93 Difference]: Finished difference Result 11561 states and 18352 transitions. [2020-10-28 19:48:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:53,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-28 19:48:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:53,174 INFO L225 Difference]: With dead ends: 11561 [2020-10-28 19:48:53,175 INFO L226 Difference]: Without dead ends: 11556 [2020-10-28 19:48:53,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11556 states. [2020-10-28 19:48:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11556 to 10589. [2020-10-28 19:48:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10589 states. [2020-10-28 19:48:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 17050 transitions. [2020-10-28 19:48:54,990 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 17050 transitions. Word has length 64 [2020-10-28 19:48:54,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:48:54,991 INFO L481 AbstractCegarLoop]: Abstraction has 10589 states and 17050 transitions. [2020-10-28 19:48:54,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:48:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 17050 transitions. [2020-10-28 19:48:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 19:48:55,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:48:55,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:48:55,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:48:55,017 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:48:55,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:48:55,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1020773755, now seen corresponding path program 1 times [2020-10-28 19:48:55,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:48:55,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967227108] [2020-10-28 19:48:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:48:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:55,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:55,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 19:48:55,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:48:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-28 19:48:55,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:55,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:48:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:48:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 19:48:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:55,834 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:48:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:48:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:48:55,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:48:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:48:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:48:55,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:48:55,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:48:55,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:48:55,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:48:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:48:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:48:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:48:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:48:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:48:55,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967227108] [2020-10-28 19:48:55,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:48:55,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:48:55,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111819469] [2020-10-28 19:48:55,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:48:55,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:48:55,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:48:55,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:48:55,864 INFO L87 Difference]: Start difference. First operand 10589 states and 17050 transitions. Second operand 4 states. [2020-10-28 19:48:56,192 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:48:58,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:48:58,816 INFO L93 Difference]: Finished difference Result 22686 states and 37800 transitions. [2020-10-28 19:48:58,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:48:58,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-28 19:48:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:48:58,880 INFO L225 Difference]: With dead ends: 22686 [2020-10-28 19:48:58,880 INFO L226 Difference]: Without dead ends: 12124 [2020-10-28 19:48:58,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:48:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12124 states. [2020-10-28 19:49:00,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12124 to 10033. [2020-10-28 19:49:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10033 states. [2020-10-28 19:49:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10033 states to 10033 states and 15850 transitions. [2020-10-28 19:49:00,380 INFO L78 Accepts]: Start accepts. Automaton has 10033 states and 15850 transitions. Word has length 78 [2020-10-28 19:49:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:00,381 INFO L481 AbstractCegarLoop]: Abstraction has 10033 states and 15850 transitions. [2020-10-28 19:49:00,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:49:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 10033 states and 15850 transitions. [2020-10-28 19:49:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 19:49:00,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:00,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:49:00,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:49:00,395 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash 302775809, now seen corresponding path program 1 times [2020-10-28 19:49:00,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:00,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154600263] [2020-10-28 19:49:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:00,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:00,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:01,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1563 [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 19:49:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:02,182 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:49:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:02,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:49:02,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:02,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:02,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:02,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:02,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:02,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 19:49:02,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:49:02,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:02,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 19:49:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:49:02,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154600263] [2020-10-28 19:49:02,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:49:02,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:49:02,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290147439] [2020-10-28 19:49:02,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:49:02,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:02,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:49:02,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:49:02,301 INFO L87 Difference]: Start difference. First operand 10033 states and 15850 transitions. Second operand 5 states. [2020-10-28 19:49:02,477 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:49:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:04,735 INFO L93 Difference]: Finished difference Result 20564 states and 32291 transitions. [2020-10-28 19:49:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:49:04,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-28 19:49:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:04,788 INFO L225 Difference]: With dead ends: 20564 [2020-10-28 19:49:04,788 INFO L226 Difference]: Without dead ends: 10549 [2020-10-28 19:49:04,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:49:04,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10549 states. [2020-10-28 19:49:06,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10549 to 9864. [2020-10-28 19:49:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9864 states. [2020-10-28 19:49:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9864 states to 9864 states and 15566 transitions. [2020-10-28 19:49:06,072 INFO L78 Accepts]: Start accepts. Automaton has 9864 states and 15566 transitions. Word has length 83 [2020-10-28 19:49:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:06,072 INFO L481 AbstractCegarLoop]: Abstraction has 9864 states and 15566 transitions. [2020-10-28 19:49:06,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:49:06,073 INFO L276 IsEmpty]: Start isEmpty. Operand 9864 states and 15566 transitions. [2020-10-28 19:49:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 19:49:06,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:06,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:49:06,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:49:06,085 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1431328641, now seen corresponding path program 1 times [2020-10-28 19:49:06,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:06,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262700562] [2020-10-28 19:49:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:06,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:06,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 19:49:06,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:49:06,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-28 19:49:06,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:06,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 19:49:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 19:49:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:06,837 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:49:06,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:06,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:06,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:06,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:49:06,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:06,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:06,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:06,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 19:49:06,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:49:06,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:06,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:49:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:49:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:49:06,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262700562] [2020-10-28 19:49:06,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:49:06,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:49:06,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319432607] [2020-10-28 19:49:06,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:49:06,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:06,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:49:06,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:49:06,967 INFO L87 Difference]: Start difference. First operand 9864 states and 15566 transitions. Second operand 7 states. [2020-10-28 19:49:07,336 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:49:08,250 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:49:10,368 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 19:49:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:13,156 INFO L93 Difference]: Finished difference Result 21882 states and 36021 transitions. [2020-10-28 19:49:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 19:49:13,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-28 19:49:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:13,224 INFO L225 Difference]: With dead ends: 21882 [2020-10-28 19:49:13,224 INFO L226 Difference]: Without dead ends: 17231 [2020-10-28 19:49:13,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 19:49:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17231 states. [2020-10-28 19:49:15,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17231 to 14704. [2020-10-28 19:49:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14704 states. [2020-10-28 19:49:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14704 states to 14704 states and 24116 transitions. [2020-10-28 19:49:15,299 INFO L78 Accepts]: Start accepts. Automaton has 14704 states and 24116 transitions. Word has length 83 [2020-10-28 19:49:15,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:15,299 INFO L481 AbstractCegarLoop]: Abstraction has 14704 states and 24116 transitions. [2020-10-28 19:49:15,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 19:49:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 14704 states and 24116 transitions. [2020-10-28 19:49:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 19:49:15,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:15,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:49:15,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:49:15,312 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:15,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:15,312 INFO L82 PathProgramCache]: Analyzing trace with hash 58359635, now seen corresponding path program 1 times [2020-10-28 19:49:15,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:15,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881275478] [2020-10-28 19:49:15,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:15,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:15,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 19:49:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-28 19:49:15,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:15,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 19:49:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:49:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 19:49:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:15,910 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:49:15,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:15,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:49:15,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:15,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:16,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:16,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 19:49:16,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:49:16,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:16,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:49:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:49:16,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881275478] [2020-10-28 19:49:16,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:49:16,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 19:49:16,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056923762] [2020-10-28 19:49:16,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:49:16,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:16,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:49:16,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:49:16,103 INFO L87 Difference]: Start difference. First operand 14704 states and 24116 transitions. Second operand 10 states. [2020-10-28 19:49:16,335 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:49:16,673 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:49:16,948 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 19:49:17,432 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:49:17,717 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 19:49:19,568 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 19:49:19,908 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-28 19:49:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:22,713 INFO L93 Difference]: Finished difference Result 30236 states and 51883 transitions. [2020-10-28 19:49:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 19:49:22,714 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-10-28 19:49:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:22,810 INFO L225 Difference]: With dead ends: 30236 [2020-10-28 19:49:22,810 INFO L226 Difference]: Without dead ends: 22318 [2020-10-28 19:49:22,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-28 19:49:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22318 states. [2020-10-28 19:49:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22318 to 18734. [2020-10-28 19:49:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18734 states. [2020-10-28 19:49:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18734 states to 18734 states and 32128 transitions. [2020-10-28 19:49:25,561 INFO L78 Accepts]: Start accepts. Automaton has 18734 states and 32128 transitions. Word has length 84 [2020-10-28 19:49:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:25,562 INFO L481 AbstractCegarLoop]: Abstraction has 18734 states and 32128 transitions. [2020-10-28 19:49:25,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 19:49:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 18734 states and 32128 transitions. [2020-10-28 19:49:25,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 19:49:25,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:25,575 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 19:49:25,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:49:25,576 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:25,576 INFO L82 PathProgramCache]: Analyzing trace with hash -823114836, now seen corresponding path program 1 times [2020-10-28 19:49:25,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:25,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202363836] [2020-10-28 19:49:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:25,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:26,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:30,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:30,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 19:49:30,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:49:30,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:49:30,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:30,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 19:49:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:49:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 19:49:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:30,811 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:49:30,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:30,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:30,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:30,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:30,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:49:30,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:30,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:30,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:30,963 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 19:49:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 19:49:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:31,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:31,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 19:49:31,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:31,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 19:49:31,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:31,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:31,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:49:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:49:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 19:49:31,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:49:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:31,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:31,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:49:31,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:49:31,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:31,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:49:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 19:49:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:31,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 19:49:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:31,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 19:49:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:49:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:31,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 19:49:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 19:49:31,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202363836] [2020-10-28 19:49:31,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:49:31,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 19:49:31,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641438293] [2020-10-28 19:49:31,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:49:31,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:31,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:49:31,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:49:31,183 INFO L87 Difference]: Start difference. First operand 18734 states and 32128 transitions. Second operand 8 states. [2020-10-28 19:49:31,403 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:49:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:36,681 INFO L93 Difference]: Finished difference Result 40147 states and 78930 transitions. [2020-10-28 19:49:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:49:36,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-28 19:49:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:36,791 INFO L225 Difference]: With dead ends: 40147 [2020-10-28 19:49:36,791 INFO L226 Difference]: Without dead ends: 21553 [2020-10-28 19:49:37,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-10-28 19:49:37,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21553 states. [2020-10-28 19:49:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21553 to 19754. [2020-10-28 19:49:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19754 states. [2020-10-28 19:49:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19754 states to 19754 states and 36204 transitions. [2020-10-28 19:49:40,911 INFO L78 Accepts]: Start accepts. Automaton has 19754 states and 36204 transitions. Word has length 109 [2020-10-28 19:49:40,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:40,912 INFO L481 AbstractCegarLoop]: Abstraction has 19754 states and 36204 transitions. [2020-10-28 19:49:40,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:49:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 19754 states and 36204 transitions. [2020-10-28 19:49:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 19:49:40,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:40,925 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 19:49:40,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:49:40,925 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:40,926 INFO L82 PathProgramCache]: Analyzing trace with hash -406530571, now seen corresponding path program 1 times [2020-10-28 19:49:40,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:40,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477033853] [2020-10-28 19:49:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:41,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:45,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:45,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 19:49:45,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:49:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:49:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:45,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 19:49:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 19:49:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:46,164 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:49:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:46,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:46,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:49:46,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:46,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:46,324 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 19:49:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:49:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:46,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 19:49:46,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:46,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:49:46,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:46,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:49:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 19:49:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:46,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:46,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 19:49:46,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:49:46,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:46,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 19:49:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 19:49:46,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477033853] [2020-10-28 19:49:46,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:49:46,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 19:49:46,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209429407] [2020-10-28 19:49:46,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:49:46,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:46,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:49:46,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:49:46,390 INFO L87 Difference]: Start difference. First operand 19754 states and 36204 transitions. Second operand 5 states. [2020-10-28 19:49:46,782 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:49:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:50,629 INFO L93 Difference]: Finished difference Result 40048 states and 77367 transitions. [2020-10-28 19:49:50,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:49:50,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-28 19:49:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:50,705 INFO L225 Difference]: With dead ends: 40048 [2020-10-28 19:49:50,705 INFO L226 Difference]: Without dead ends: 20434 [2020-10-28 19:49:50,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:49:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20434 states. [2020-10-28 19:49:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20434 to 19613. [2020-10-28 19:49:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19613 states. [2020-10-28 19:49:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19613 states to 19613 states and 34232 transitions. [2020-10-28 19:49:53,862 INFO L78 Accepts]: Start accepts. Automaton has 19613 states and 34232 transitions. Word has length 96 [2020-10-28 19:49:53,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:53,863 INFO L481 AbstractCegarLoop]: Abstraction has 19613 states and 34232 transitions. [2020-10-28 19:49:53,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:49:53,863 INFO L276 IsEmpty]: Start isEmpty. Operand 19613 states and 34232 transitions. [2020-10-28 19:49:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 19:49:53,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:53,876 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 19:49:53,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 19:49:53,877 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:53,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:53,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1993803584, now seen corresponding path program 1 times [2020-10-28 19:49:53,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:53,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885639557] [2020-10-28 19:49:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:53,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:53,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:54,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:54,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 19:49:58,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:49:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 19:49:58,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:58,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 19:49:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:49:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 19:49:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:59,119 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:49:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:59,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:59,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:59,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:59,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:49:59,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:59,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:59,272 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 19:49:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 19:49:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:59,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:59,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 19:49:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 19:49:59,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:59,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:49:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:49:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 19:49:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:49:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:59,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:59,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:59,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 19:49:59,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 19:49:59,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:59,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 19:49:59,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 19:49:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:59,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:59,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 19:49:59,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:49:59,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:59,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 19:49:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 19:49:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 19:49:59,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885639557] [2020-10-28 19:49:59,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:49:59,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 19:49:59,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466138221] [2020-10-28 19:49:59,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:49:59,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:59,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:49:59,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:49:59,568 INFO L87 Difference]: Start difference. First operand 19613 states and 34232 transitions. Second operand 8 states. [2020-10-28 19:49:59,785 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:49:59,983 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:50:04,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:50:04,191 INFO L93 Difference]: Finished difference Result 34490 states and 62362 transitions. [2020-10-28 19:50:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 19:50:04,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-10-28 19:50:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:50:04,273 INFO L225 Difference]: With dead ends: 34490 [2020-10-28 19:50:04,274 INFO L226 Difference]: Without dead ends: 15017 [2020-10-28 19:50:04,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-28 19:50:04,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15017 states. [2020-10-28 19:50:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15017 to 13785. [2020-10-28 19:50:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13785 states. [2020-10-28 19:50:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13785 states to 13785 states and 23083 transitions. [2020-10-28 19:50:06,675 INFO L78 Accepts]: Start accepts. Automaton has 13785 states and 23083 transitions. Word has length 112 [2020-10-28 19:50:06,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:50:06,675 INFO L481 AbstractCegarLoop]: Abstraction has 13785 states and 23083 transitions. [2020-10-28 19:50:06,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:50:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 13785 states and 23083 transitions. [2020-10-28 19:50:06,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 19:50:06,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:50:06,689 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:50:06,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 19:50:06,689 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:50:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:50:06,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1577002808, now seen corresponding path program 1 times [2020-10-28 19:50:06,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:50:06,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6386682] [2020-10-28 19:50:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:50:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:06,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:07,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:11,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:11,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 19:50:11,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:50:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:50:11,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:11,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 19:50:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:50:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:11,931 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:50:11,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:50:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:11,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:11,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:50:11,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:50:11,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:11,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:11,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:11,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:12,070 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 19:50:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 19:50:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:12,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:12,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:12,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 19:50:12,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:50:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 19:50:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:12,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:12,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:50:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:12,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:12,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 19:50:12,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:50:12,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:12,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:12,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 19:50:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:12,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 19:50:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:12,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:12,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:12,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 19:50:12,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:50:12,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:12,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 19:50:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 19:50:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:12,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:12,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 19:50:12,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:50:12,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:50:12,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:12,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 19:50:12,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:50:12,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-28 19:50:12,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6386682] [2020-10-28 19:50:12,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:50:12,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 19:50:12,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039241472] [2020-10-28 19:50:12,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:50:12,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:50:12,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:50:12,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:50:12,372 INFO L87 Difference]: Start difference. First operand 13785 states and 23083 transitions. Second operand 8 states. [2020-10-28 19:50:12,571 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:50:13,558 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:50:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:50:19,431 INFO L93 Difference]: Finished difference Result 36066 states and 73775 transitions. [2020-10-28 19:50:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 19:50:19,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2020-10-28 19:50:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:50:19,535 INFO L225 Difference]: With dead ends: 36066 [2020-10-28 19:50:19,535 INFO L226 Difference]: Without dead ends: 23276 [2020-10-28 19:50:19,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 19:50:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23276 states. [2020-10-28 19:50:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23276 to 22243. [2020-10-28 19:50:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22243 states. [2020-10-28 19:50:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22243 states to 22243 states and 42549 transitions. [2020-10-28 19:50:23,568 INFO L78 Accepts]: Start accepts. Automaton has 22243 states and 42549 transitions. Word has length 156 [2020-10-28 19:50:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:50:23,568 INFO L481 AbstractCegarLoop]: Abstraction has 22243 states and 42549 transitions. [2020-10-28 19:50:23,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:50:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 22243 states and 42549 transitions. [2020-10-28 19:50:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 19:50:23,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:50:23,579 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:50:23,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 19:50:23,579 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:50:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:50:23,580 INFO L82 PathProgramCache]: Analyzing trace with hash 390518267, now seen corresponding path program 1 times [2020-10-28 19:50:23,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:50:23,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052530825] [2020-10-28 19:50:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:50:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:26,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:26,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 19:50:26,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:50:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2600 [2020-10-28 19:50:26,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:26,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:50:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:50:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 19:50:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:26,416 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:50:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:50:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:26,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:26,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:50:26,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:26,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:50:26,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:26,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:50:26,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052530825] [2020-10-28 19:50:26,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:50:26,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 19:50:26,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601431860] [2020-10-28 19:50:26,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:50:26,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:50:26,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:50:26,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:50:26,458 INFO L87 Difference]: Start difference. First operand 22243 states and 42549 transitions. Second operand 5 states. [2020-10-28 19:50:26,742 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:50:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:50:31,206 INFO L93 Difference]: Finished difference Result 42799 states and 88376 transitions. [2020-10-28 19:50:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:50:31,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-28 19:50:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:50:31,305 INFO L225 Difference]: With dead ends: 42799 [2020-10-28 19:50:31,305 INFO L226 Difference]: Without dead ends: 24875 [2020-10-28 19:50:31,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:50:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24875 states. [2020-10-28 19:50:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24875 to 22611. [2020-10-28 19:50:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22611 states. [2020-10-28 19:50:35,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22611 states to 22611 states and 42763 transitions. [2020-10-28 19:50:35,537 INFO L78 Accepts]: Start accepts. Automaton has 22611 states and 42763 transitions. Word has length 119 [2020-10-28 19:50:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:50:35,538 INFO L481 AbstractCegarLoop]: Abstraction has 22611 states and 42763 transitions. [2020-10-28 19:50:35,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:50:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 22611 states and 42763 transitions. [2020-10-28 19:50:35,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 19:50:35,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:50:35,547 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 19:50:35,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 19:50:35,547 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:50:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:50:35,548 INFO L82 PathProgramCache]: Analyzing trace with hash -444911661, now seen corresponding path program 1 times [2020-10-28 19:50:35,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:50:35,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339600610] [2020-10-28 19:50:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:50:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:35,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:37,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:37,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 19:50:37,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:50:37,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2301 [2020-10-28 19:50:37,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:37,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 19:50:37,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 19:50:37,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:38,078 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:50:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:50:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:38,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:38,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:50:38,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:50:38,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:38,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:38,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 19:50:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:38,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:38,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 19:50:38,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:50:38,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:38,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:50:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 19:50:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:50:38,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339600610] [2020-10-28 19:50:38,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:50:38,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:50:38,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479686164] [2020-10-28 19:50:38,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:50:38,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:50:38,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:50:38,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:50:38,237 INFO L87 Difference]: Start difference. First operand 22611 states and 42763 transitions. Second operand 5 states. [2020-10-28 19:50:38,456 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:50:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:50:43,368 INFO L93 Difference]: Finished difference Result 44711 states and 106294 transitions. [2020-10-28 19:50:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:50:43,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-28 19:50:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:50:43,514 INFO L225 Difference]: With dead ends: 44711 [2020-10-28 19:50:43,514 INFO L226 Difference]: Without dead ends: 22441 [2020-10-28 19:50:43,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:50:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22441 states. [2020-10-28 19:50:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22441 to 21213. [2020-10-28 19:50:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21213 states. [2020-10-28 19:50:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21213 states to 21213 states and 48888 transitions. [2020-10-28 19:50:49,407 INFO L78 Accepts]: Start accepts. Automaton has 21213 states and 48888 transitions. Word has length 125 [2020-10-28 19:50:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:50:49,407 INFO L481 AbstractCegarLoop]: Abstraction has 21213 states and 48888 transitions. [2020-10-28 19:50:49,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:50:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 21213 states and 48888 transitions. [2020-10-28 19:50:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-28 19:50:49,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:50:49,421 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:50:49,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 19:50:49,422 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:50:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:50:49,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2069875423, now seen corresponding path program 1 times [2020-10-28 19:50:49,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:50:49,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569360514] [2020-10-28 19:50:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:50:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:49,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:49,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:49,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-28 19:50:54,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:50:54,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:54,675 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:50:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:50:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:54,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:54,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:50:54,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:50:54,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:54,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:54,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:54,825 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-28 19:50:54,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 19:50:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:54,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:54,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 19:50:54,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:50:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 19:50:54,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:54,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:54,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:54,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:54,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 19:50:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:54,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:54,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:54,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 19:50:54,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:54,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:50:54,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:54,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:54,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:54,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:54,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:54,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:55,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 19:50:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:55,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:55,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 19:50:55,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:55,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:50:55,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:55,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:55,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 19:50:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:55,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:55,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 19:50:55,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:50:55,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:55,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 19:50:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 19:50:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:55,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:55,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 19:50:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:50:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:50:55,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:55,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 19:50:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 19:50:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-28 19:50:55,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569360514] [2020-10-28 19:50:55,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:50:55,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 19:50:55,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901565514] [2020-10-28 19:50:55,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:50:55,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:50:55,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:50:55,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:50:55,140 INFO L87 Difference]: Start difference. First operand 21213 states and 48888 transitions. Second operand 8 states. [2020-10-28 19:50:55,359 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:50:55,957 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:51:02,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:51:02,226 INFO L93 Difference]: Finished difference Result 40559 states and 113848 transitions. [2020-10-28 19:51:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 19:51:02,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-10-28 19:51:02,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:51:02,394 INFO L225 Difference]: With dead ends: 40559 [2020-10-28 19:51:02,394 INFO L226 Difference]: Without dead ends: 19776 [2020-10-28 19:51:03,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 19:51:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19776 states.