/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/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:42:08,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:42:08,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:42:08,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:42:08,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:42:08,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:42:08,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:42:08,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:42:08,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:42:08,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:42:08,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:42:08,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:42:08,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:42:08,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:42:08,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:42:08,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:42:08,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:42:08,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:42:09,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:42:09,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:42:09,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:42:09,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:42:09,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:42:09,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:42:09,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:42:09,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:42:09,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:42:09,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:42:09,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:42:09,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:42:09,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:42:09,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:42:09,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:42:09,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:42:09,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:42:09,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:42:09,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:42:09,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:42:09,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:42:09,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:42:09,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:42:09,055 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 17:42:09,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:42:09,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:42:09,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:42:09,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:42:09,113 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:42:09,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:42:09,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:42:09,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:42:09,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:42:09,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:42:09,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:42:09,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:42:09,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:42:09,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:42:09,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:42:09,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:42:09,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:42:09,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:42:09,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:42:09,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:42:09,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:42:09,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:42:09,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:42:09,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:42:09,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:42:09,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:42:09,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:42:09,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:42:09,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:42:09,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:42:09,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:42:09,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:42:09,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:42:09,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:42:09,562 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:42:09,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2020-10-28 17:42:09,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cd80f075/2e05cc72964b47229dceb02b29c4cb5b/FLAGb1dec8860 [2020-10-28 17:42:10,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:42:10,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2020-10-28 17:42:10,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cd80f075/2e05cc72964b47229dceb02b29c4cb5b/FLAGb1dec8860 [2020-10-28 17:42:10,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cd80f075/2e05cc72964b47229dceb02b29c4cb5b [2020-10-28 17:42:10,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:42:10,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:42:10,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:42:10,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:42:10,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:42:10,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:42:10" (1/1) ... [2020-10-28 17:42:10,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c35e505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:10, skipping insertion in model container [2020-10-28 17:42:10,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:42:10" (1/1) ... [2020-10-28 17:42:10,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:42:10,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:42:10,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:42:10,947 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:42:11,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:42:11,047 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:42:11,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11 WrapperNode [2020-10-28 17:42:11,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:42:11,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:42:11,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:42:11,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:42:11,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (1/1) ... [2020-10-28 17:42:11,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (1/1) ... [2020-10-28 17:42:11,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (1/1) ... [2020-10-28 17:42:11,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (1/1) ... [2020-10-28 17:42:11,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (1/1) ... [2020-10-28 17:42:11,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (1/1) ... [2020-10-28 17:42:11,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (1/1) ... [2020-10-28 17:42:11,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:42:11,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:42:11,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:42:11,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:42:11,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (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 17:42:11,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:42:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:42:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:42:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:42:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:42:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:42:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:42:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:42:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:42:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:42:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:42:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:42:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:42:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:42:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:42:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:42:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:42:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:42:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:42:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:42:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:42:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:42:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:42:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:42:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:42:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:42:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:42:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:42:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:42:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:42:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:42:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:42:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:42:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:42:12,002 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:42:12,002 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:42:12,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:42:12 BoogieIcfgContainer [2020-10-28 17:42:12,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:42:12,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:42:12,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:42:12,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:42:12,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:42:10" (1/3) ... [2020-10-28 17:42:12,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c26de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:42:12, skipping insertion in model container [2020-10-28 17:42:12,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:42:11" (2/3) ... [2020-10-28 17:42:12,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c26de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:42:12, skipping insertion in model container [2020-10-28 17:42:12,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:42:12" (3/3) ... [2020-10-28 17:42:12,018 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c [2020-10-28 17:42:12,035 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:42:12,041 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:42:12,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:42:12,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:42:12,098 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:42:12,098 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:42:12,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:42:12,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:42:12,098 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:42:12,098 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:42:12,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:42:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-10-28 17:42:12,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 17:42:12,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:12,145 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 17:42:12,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1495902646, now seen corresponding path program 1 times [2020-10-28 17:42:12,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:12,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980827422] [2020-10-28 17:42:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:42:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-28 17:42:12,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:12,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:42:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:42:13,005 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:13,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:13,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:42:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:13,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:13,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:13,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:13,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:42:13,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:13,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:42:13,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:42:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:13,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:13,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:13,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:13,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:13,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:13,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:42:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:42:13,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:42:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:42:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:13,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:42:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:13,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:13,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:13,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:13,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:13,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:42:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:13,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:13,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:13,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:13,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:13,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:13,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:13,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:13,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:13,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:13,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:13,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:13,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:13,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:13,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:13,280 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 17:42:13,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980827422] [2020-10-28 17:42:13,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:13,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:42:13,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785438834] [2020-10-28 17:42:13,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:42:13,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:42:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:42:13,314 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 6 states. [2020-10-28 17:42:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:13,902 INFO L93 Difference]: Finished difference Result 158 states and 224 transitions. [2020-10-28 17:42:13,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:42:13,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-28 17:42:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:13,914 INFO L225 Difference]: With dead ends: 158 [2020-10-28 17:42:13,915 INFO L226 Difference]: Without dead ends: 91 [2020-10-28 17:42:13,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-28 17:42:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-28 17:42:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 17:42:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2020-10-28 17:42:13,975 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 54 [2020-10-28 17:42:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:13,976 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2020-10-28 17:42:13,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:42:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2020-10-28 17:42:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 17:42:13,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:13,979 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 17:42:13,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:42:13,979 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:13,980 INFO L82 PathProgramCache]: Analyzing trace with hash -349464520, now seen corresponding path program 1 times [2020-10-28 17:42:13,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:13,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361091652] [2020-10-28 17:42:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:42:14,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-28 17:42:14,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:42:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:42:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:42:14,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:14,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:42:14,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:14,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:14,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:14,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:14,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:42:14,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:14,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:42:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:14,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:14,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:42:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:14,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 17:42:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:14,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:14,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:14,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:14,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:14,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:14,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:15,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:42:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:15,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:15,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:15,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:15,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:15,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:15,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:15,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:15,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:42:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:15,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:15,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:15,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:15,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:15,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:15,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:15,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:15,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:15,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:15,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:15,078 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 17:42:15,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361091652] [2020-10-28 17:42:15,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:15,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:42:15,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24821281] [2020-10-28 17:42:15,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:42:15,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:15,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:42:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:42:15,082 INFO L87 Difference]: Start difference. First operand 90 states and 127 transitions. Second operand 12 states. [2020-10-28 17:42:15,281 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:15,688 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:42:15,889 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:42:16,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:16,895 INFO L93 Difference]: Finished difference Result 153 states and 212 transitions. [2020-10-28 17:42:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:42:16,900 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-28 17:42:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:16,903 INFO L225 Difference]: With dead ends: 153 [2020-10-28 17:42:16,903 INFO L226 Difference]: Without dead ends: 91 [2020-10-28 17:42:16,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:42:16,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-28 17:42:16,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-28 17:42:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 17:42:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2020-10-28 17:42:16,924 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 54 [2020-10-28 17:42:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:16,925 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2020-10-28 17:42:16,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:42:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2020-10-28 17:42:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:42:16,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:16,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:42:16,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:42:16,928 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:16,929 INFO L82 PathProgramCache]: Analyzing trace with hash 829158538, now seen corresponding path program 1 times [2020-10-28 17:42:16,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:16,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747750102] [2020-10-28 17:42:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:19,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:19,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 17:42:19,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:42:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2760 [2020-10-28 17:42:19,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:19,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:19,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:19,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:42:19,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 17:42:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:42:19,888 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:19,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:19,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:19,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:19,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:19,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:19,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:19,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:19,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:19,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:19,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:42:19,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:19,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:19,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:19,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:42:19,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:42:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:19,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:19,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:19,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:19,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:19,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:20,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:20,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:42:20,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:42:20,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:20,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:20,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:42:20,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:20,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:20,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:20,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:20,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:20,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:20,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:20,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:20,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:20,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:20,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:20,190 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 17:42:20,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747750102] [2020-10-28 17:42:20,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:20,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:42:20,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215874203] [2020-10-28 17:42:20,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:20,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:20,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:20,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:20,194 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand 9 states. [2020-10-28 17:42:20,358 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:21,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:21,548 INFO L93 Difference]: Finished difference Result 198 states and 259 transitions. [2020-10-28 17:42:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:42:21,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-28 17:42:21,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:21,553 INFO L225 Difference]: With dead ends: 198 [2020-10-28 17:42:21,553 INFO L226 Difference]: Without dead ends: 142 [2020-10-28 17:42:21,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:42:21,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-28 17:42:21,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2020-10-28 17:42:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-28 17:42:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2020-10-28 17:42:21,580 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 69 [2020-10-28 17:42:21,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:21,581 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2020-10-28 17:42:21,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2020-10-28 17:42:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:42:21,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:21,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:42:21,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:42:21,587 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:21,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1349026348, now seen corresponding path program 1 times [2020-10-28 17:42:21,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:21,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575773178] [2020-10-28 17:42:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:22,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:22,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 17:42:22,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:42:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-28 17:42:22,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:22,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:42:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:42:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:22,861 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:22,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:22,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:22,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:42:22,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:22,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:22,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:22,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:42:22,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:22,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:22,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:22,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:22,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:22,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:22,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:22,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:22,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:22,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:22,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:23,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:23,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:42:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:23,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:23,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:23,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:23,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:23,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:23,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:23,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:42:23,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:23,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:23,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:23,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:23,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:23,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:23,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:23,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:23,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:23,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:23,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:23,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:23,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:23,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:23,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:23,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:23,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:23,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:23,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:23,225 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 17:42:23,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575773178] [2020-10-28 17:42:23,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:23,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:42:23,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345705990] [2020-10-28 17:42:23,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:23,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:23,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:23,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:23,233 INFO L87 Difference]: Start difference. First operand 137 states and 176 transitions. Second operand 9 states. [2020-10-28 17:42:23,415 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:24,463 INFO L93 Difference]: Finished difference Result 335 states and 448 transitions. [2020-10-28 17:42:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:42:24,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-28 17:42:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:24,473 INFO L225 Difference]: With dead ends: 335 [2020-10-28 17:42:24,473 INFO L226 Difference]: Without dead ends: 232 [2020-10-28 17:42:24,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:42:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-28 17:42:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2020-10-28 17:42:24,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-28 17:42:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 296 transitions. [2020-10-28 17:42:24,560 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 296 transitions. Word has length 69 [2020-10-28 17:42:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:24,560 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 296 transitions. [2020-10-28 17:42:24,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 296 transitions. [2020-10-28 17:42:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:42:24,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:24,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:42:24,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:42:24,566 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:24,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2094609078, now seen corresponding path program 1 times [2020-10-28 17:42:24,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:24,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721592796] [2020-10-28 17:42:24,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 17:42:25,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-28 17:42:25,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:42:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:42:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:42:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,214 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:25,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:25,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:25,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:25,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:25,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:25,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:42:25,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:42:25,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:42:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:25,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:25,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:25,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:42:25,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:42:25,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:25,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:42:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:25,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:25,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:25,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:25,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:25,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:25,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:25,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:42:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:42:25,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:25,567 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 17:42:25,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721592796] [2020-10-28 17:42:25,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:25,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:42:25,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508434968] [2020-10-28 17:42:25,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:42:25,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:25,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:42:25,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:42:25,570 INFO L87 Difference]: Start difference. First operand 225 states and 296 transitions. Second operand 13 states. [2020-10-28 17:42:25,835 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:42:26,037 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:42:26,189 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:26,970 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:28,132 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:42:28,315 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:42:28,535 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:30,477 INFO L93 Difference]: Finished difference Result 1797 states and 2480 transitions. [2020-10-28 17:42:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-28 17:42:30,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-28 17:42:30,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:30,503 INFO L225 Difference]: With dead ends: 1797 [2020-10-28 17:42:30,503 INFO L226 Difference]: Without dead ends: 1606 [2020-10-28 17:42:30,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=646, Invalid=2324, Unknown=0, NotChecked=0, Total=2970 [2020-10-28 17:42:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-10-28 17:42:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1553. [2020-10-28 17:42:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-28 17:42:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2116 transitions. [2020-10-28 17:42:30,697 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2116 transitions. Word has length 69 [2020-10-28 17:42:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:30,698 INFO L481 AbstractCegarLoop]: Abstraction has 1553 states and 2116 transitions. [2020-10-28 17:42:30,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:42:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2116 transitions. [2020-10-28 17:42:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:42:30,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:30,700 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] [2020-10-28 17:42:30,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:42:30,700 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:30,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:30,701 INFO L82 PathProgramCache]: Analyzing trace with hash 465737874, now seen corresponding path program 1 times [2020-10-28 17:42:30,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:30,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028595168] [2020-10-28 17:42:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:30,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:31,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:31,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 17:42:31,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-28 17:42:31,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:31,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:42:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:42:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 17:42:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:31,409 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:31,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:42:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:31,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:31,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:31,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:42:31,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:31,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:42:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:31,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:31,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:31,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:31,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:31,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:31,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:31,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:31,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:31,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:42:31,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:31,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:31,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:31,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:31,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:31,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:42:31,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:31,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:31,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:31,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:31,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:42:31,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:31,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:31,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:42:31,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:42:31,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:31,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:42:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:42:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:31,796 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 17:42:31,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028595168] [2020-10-28 17:42:31,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:31,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:42:31,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870749595] [2020-10-28 17:42:31,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:42:31,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:31,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:42:31,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:42:31,802 INFO L87 Difference]: Start difference. First operand 1553 states and 2116 transitions. Second operand 13 states. [2020-10-28 17:42:31,981 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:32,148 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:42:32,293 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:32,792 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 17:42:33,893 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:42:34,519 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:42:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:36,304 INFO L93 Difference]: Finished difference Result 4095 states and 5837 transitions. [2020-10-28 17:42:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-28 17:42:36,304 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-28 17:42:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:36,323 INFO L225 Difference]: With dead ends: 4095 [2020-10-28 17:42:36,323 INFO L226 Difference]: Without dead ends: 2576 [2020-10-28 17:42:36,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=573, Invalid=1877, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 17:42:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2020-10-28 17:42:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2141. [2020-10-28 17:42:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2141 states. [2020-10-28 17:42:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2924 transitions. [2020-10-28 17:42:36,592 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2924 transitions. Word has length 71 [2020-10-28 17:42:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:36,593 INFO L481 AbstractCegarLoop]: Abstraction has 2141 states and 2924 transitions. [2020-10-28 17:42:36,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:42:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2924 transitions. [2020-10-28 17:42:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:42:36,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:36,595 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] [2020-10-28 17:42:36,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:42:36,595 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1729808346, now seen corresponding path program 1 times [2020-10-28 17:42:36,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:36,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044997052] [2020-10-28 17:42:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 17:42:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:42:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-28 17:42:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 17:42:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:42:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,306 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:37,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:37,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:37,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:37,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:37,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:37,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:37,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:42:37,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:37,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:37,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:37,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:42:37,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:37,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:37,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:42:37,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:37,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:37,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:42:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:42:37,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:37,495 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 17:42:37,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044997052] [2020-10-28 17:42:37,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:37,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:42:37,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924179845] [2020-10-28 17:42:37,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:42:37,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:37,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:42:37,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:42:37,498 INFO L87 Difference]: Start difference. First operand 2141 states and 2924 transitions. Second operand 7 states. [2020-10-28 17:42:38,041 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:42:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:38,911 INFO L93 Difference]: Finished difference Result 6035 states and 8348 transitions. [2020-10-28 17:42:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:42:38,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-28 17:42:38,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:38,941 INFO L225 Difference]: With dead ends: 6035 [2020-10-28 17:42:38,942 INFO L226 Difference]: Without dead ends: 3928 [2020-10-28 17:42:38,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:42:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2020-10-28 17:42:39,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3801. [2020-10-28 17:42:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3801 states. [2020-10-28 17:42:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 5148 transitions. [2020-10-28 17:42:39,382 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 5148 transitions. Word has length 71 [2020-10-28 17:42:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:39,382 INFO L481 AbstractCegarLoop]: Abstraction has 3801 states and 5148 transitions. [2020-10-28 17:42:39,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:42:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 5148 transitions. [2020-10-28 17:42:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:42:39,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:39,384 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] [2020-10-28 17:42:39,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:42:39,384 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:39,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1485135809, now seen corresponding path program 1 times [2020-10-28 17:42:39,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:39,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918040939] [2020-10-28 17:42:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:39,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:39,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:42:39,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-28 17:42:39,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:39,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:42:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 17:42:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:42:39,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:40,027 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:40,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:40,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:42:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:40,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:40,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:40,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:40,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:40,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:40,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:42:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:40,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:40,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:40,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:40,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:40,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:40,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:40,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:40,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:40,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:40,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:40,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:40,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:40,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:40,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:40,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:40,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:40,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:40,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:40,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:40,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:40,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:40,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:42:40,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:40,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:42:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:40,251 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 17:42:40,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918040939] [2020-10-28 17:42:40,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:40,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:42:40,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383443743] [2020-10-28 17:42:40,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:42:40,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:40,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:42:40,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:42:40,257 INFO L87 Difference]: Start difference. First operand 3801 states and 5148 transitions. Second operand 12 states. [2020-10-28 17:42:41,029 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:42:41,171 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:42:41,387 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:41,541 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:42:42,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:42,114 INFO L93 Difference]: Finished difference Result 4241 states and 5965 transitions. [2020-10-28 17:42:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:42:42,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-28 17:42:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:42,149 INFO L225 Difference]: With dead ends: 4241 [2020-10-28 17:42:42,149 INFO L226 Difference]: Without dead ends: 4238 [2020-10-28 17:42:42,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:42:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2020-10-28 17:42:42,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 3909. [2020-10-28 17:42:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3909 states. [2020-10-28 17:42:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 5256 transitions. [2020-10-28 17:42:42,623 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 5256 transitions. Word has length 72 [2020-10-28 17:42:42,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:42,623 INFO L481 AbstractCegarLoop]: Abstraction has 3909 states and 5256 transitions. [2020-10-28 17:42:42,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:42:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 5256 transitions. [2020-10-28 17:42:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 17:42:42,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:42,624 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] [2020-10-28 17:42:42,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:42:42,625 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:42,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1954569570, now seen corresponding path program 1 times [2020-10-28 17:42:42,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:42,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320966498] [2020-10-28 17:42:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:42,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:42,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:42,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:42:42,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:42:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 17:42:42,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:42,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:42:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:42:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:43,032 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:43,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:43,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:43,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:43,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:43,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:43,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:43,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:43,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:43,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:43,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:43,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:43,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:42:43,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:43,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:42:43,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:43,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:43,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:43,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:43,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:43,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:43,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:42:43,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:43,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:43,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:43,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:43,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:43,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:43,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:43,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:42:43,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:43,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:43,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:43,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:43,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:43,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:43,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:42:43,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:43,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:43,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:43,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:43,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:42:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:43,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:43,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:42:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:43,294 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 17:42:43,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320966498] [2020-10-28 17:42:43,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:43,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:42:43,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153347100] [2020-10-28 17:42:43,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:43,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:43,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:43,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:43,297 INFO L87 Difference]: Start difference. First operand 3909 states and 5256 transitions. Second operand 9 states. [2020-10-28 17:42:43,449 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:44,270 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:42:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:45,368 INFO L93 Difference]: Finished difference Result 9204 states and 12450 transitions. [2020-10-28 17:42:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:42:45,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-28 17:42:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:45,402 INFO L225 Difference]: With dead ends: 9204 [2020-10-28 17:42:45,403 INFO L226 Difference]: Without dead ends: 5329 [2020-10-28 17:42:45,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:42:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2020-10-28 17:42:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 5171. [2020-10-28 17:42:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5171 states. [2020-10-28 17:42:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 6880 transitions. [2020-10-28 17:42:45,936 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 6880 transitions. Word has length 72 [2020-10-28 17:42:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:45,936 INFO L481 AbstractCegarLoop]: Abstraction has 5171 states and 6880 transitions. [2020-10-28 17:42:45,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 6880 transitions. [2020-10-28 17:42:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 17:42:45,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:45,938 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] [2020-10-28 17:42:45,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:42:45,938 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:45,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:45,938 INFO L82 PathProgramCache]: Analyzing trace with hash -309812069, now seen corresponding path program 1 times [2020-10-28 17:42:45,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:45,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207148464] [2020-10-28 17:42:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:46,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:50,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 17:42:50,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:42:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4485 [2020-10-28 17:42:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:50,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:50,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 17:42:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:42:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:50,625 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:50,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:50,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:50,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:50,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:50,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:50,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:50,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:50,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:50,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:50,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:50,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:42:50,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:50,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:42:50,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:50,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:50,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:50,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:42:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:50,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:42:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:50,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:42:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:50,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:50,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:50,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:50,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:50,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:42:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:50,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:50,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:50,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:50,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:50,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:50,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:50,844 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 17:42:50,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207148464] [2020-10-28 17:42:50,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:50,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:42:50,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679564618] [2020-10-28 17:42:50,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:50,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:50,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:50,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:50,847 INFO L87 Difference]: Start difference. First operand 5171 states and 6880 transitions. Second operand 9 states. [2020-10-28 17:42:51,025 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:42:51,613 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:42:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:52,825 INFO L93 Difference]: Finished difference Result 11236 states and 15049 transitions. [2020-10-28 17:42:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:42:52,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-28 17:42:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:52,892 INFO L225 Difference]: With dead ends: 11236 [2020-10-28 17:42:52,892 INFO L226 Difference]: Without dead ends: 7280 [2020-10-28 17:42:52,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:42:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2020-10-28 17:42:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 7233. [2020-10-28 17:42:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7233 states. [2020-10-28 17:42:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 9481 transitions. [2020-10-28 17:42:53,744 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 9481 transitions. Word has length 73 [2020-10-28 17:42:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:53,745 INFO L481 AbstractCegarLoop]: Abstraction has 7233 states and 9481 transitions. [2020-10-28 17:42:53,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:42:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 9481 transitions. [2020-10-28 17:42:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:42:53,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:53,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:53,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:42:53,749 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:53,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:53,749 INFO L82 PathProgramCache]: Analyzing trace with hash 318990572, now seen corresponding path program 1 times [2020-10-28 17:42:53,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:53,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12359575] [2020-10-28 17:42:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:53,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:54,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:58,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:58,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 17:42:58,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:42:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:42:58,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:58,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:42:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 17:42:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:58,958 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:42:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:58,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:58,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:58,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:58,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:42:58,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:58,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:58,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:58,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:58,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:42:58,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:58,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:42:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:58,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:58,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:58,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:42:58,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:58,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:58,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:42:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:59,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:59,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:42:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:42:59,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:42:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:42:59,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:42:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:59,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:42:59,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:59,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:42:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:59,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:42:59,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:42:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:42:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:59,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:59,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:42:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:59,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:42:59,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:42:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:42:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:42:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:42:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:42:59,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:59,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:42:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:59,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:42:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:42:59,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:42:59,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:59,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:42:59,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:59,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:42:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:59,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:59,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:59,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:59,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:42:59,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:59,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:59,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:42:59,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12359575] [2020-10-28 17:42:59,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:42:59,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:42:59,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901389925] [2020-10-28 17:42:59,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:42:59,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:59,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:42:59,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:42:59,266 INFO L87 Difference]: Start difference. First operand 7233 states and 9481 transitions. Second operand 9 states. [2020-10-28 17:42:59,441 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:42:59,733 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:00,864 INFO L93 Difference]: Finished difference Result 13032 states and 17078 transitions. [2020-10-28 17:43:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:43:00,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-28 17:43:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:00,894 INFO L225 Difference]: With dead ends: 13032 [2020-10-28 17:43:00,894 INFO L226 Difference]: Without dead ends: 5837 [2020-10-28 17:43:00,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:43:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5837 states. [2020-10-28 17:43:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5837 to 5462. [2020-10-28 17:43:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5462 states. [2020-10-28 17:43:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5462 states to 5462 states and 6984 transitions. [2020-10-28 17:43:01,583 INFO L78 Accepts]: Start accepts. Automaton has 5462 states and 6984 transitions. Word has length 109 [2020-10-28 17:43:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:01,583 INFO L481 AbstractCegarLoop]: Abstraction has 5462 states and 6984 transitions. [2020-10-28 17:43:01,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:43:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5462 states and 6984 transitions. [2020-10-28 17:43:01,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:43:01,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:01,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:01,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:43:01,588 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:01,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1591091783, now seen corresponding path program 1 times [2020-10-28 17:43:01,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:01,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673693352] [2020-10-28 17:43:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:06,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:06,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:43:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:43:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:43:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:06,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:43:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:43:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 17:43:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:06,788 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:06,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:06,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:06,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:06,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:06,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:06,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:06,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:06,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:06,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:06,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:06,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:43:06,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:06,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:06,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:43:06,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:06,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:06,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:06,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:06,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:06,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:06,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:06,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:06,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:06,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:43:06,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:06,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:06,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:06,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:06,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:06,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:06,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:43:06,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:06,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:07,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:07,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:07,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:07,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:07,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:07,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:07,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:07,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:07,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:07,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:07,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:07,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:07,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:07,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:07,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:07,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:07,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:07,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:07,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:07,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:43:07,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:07,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:43:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:07,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:07,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:07,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:43:07,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:07,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:43:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:07,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:07,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:07,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:07,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:07,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:07,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:07,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:43:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:07,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:07,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:07,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:07,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:07,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:43:07,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673693352] [2020-10-28 17:43:07,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:07,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:43:07,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764624853] [2020-10-28 17:43:07,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:43:07,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:07,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:43:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:43:07,332 INFO L87 Difference]: Start difference. First operand 5462 states and 6984 transitions. Second operand 14 states. [2020-10-28 17:43:07,650 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-28 17:43:07,852 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:08,017 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:43:08,850 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:09,270 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:43:09,711 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 17:43:09,863 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:43:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:12,105 INFO L93 Difference]: Finished difference Result 10337 states and 13546 transitions. [2020-10-28 17:43:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 17:43:12,106 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 111 [2020-10-28 17:43:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:12,132 INFO L225 Difference]: With dead ends: 10337 [2020-10-28 17:43:12,132 INFO L226 Difference]: Without dead ends: 5522 [2020-10-28 17:43:12,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2020-10-28 17:43:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2020-10-28 17:43:12,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 5126. [2020-10-28 17:43:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5126 states. [2020-10-28 17:43:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 6536 transitions. [2020-10-28 17:43:12,650 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 6536 transitions. Word has length 111 [2020-10-28 17:43:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:12,650 INFO L481 AbstractCegarLoop]: Abstraction has 5126 states and 6536 transitions. [2020-10-28 17:43:12,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:43:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 6536 transitions. [2020-10-28 17:43:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:43:12,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:12,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:12,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:43:12,654 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2026099269, now seen corresponding path program 1 times [2020-10-28 17:43:12,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:12,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557438169] [2020-10-28 17:43:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:43:17,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:43:17,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 17:43:17,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:43:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:43:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 17:43:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:17,894 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:17,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:17,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:17,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:17,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:43:17,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:17,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:17,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:17,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:18,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:43:18,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:18,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:18,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:43:18,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:18,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:18,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:18,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:18,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:18,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:18,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:18,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:18,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:18,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:18,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:43:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:18,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:18,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:43:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:18,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:18,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:43:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:18,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:18,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:18,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:18,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:43:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:43:18,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557438169] [2020-10-28 17:43:18,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:18,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:43:18,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404424544] [2020-10-28 17:43:18,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:43:18,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:18,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:43:18,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:43:18,425 INFO L87 Difference]: Start difference. First operand 5126 states and 6536 transitions. Second operand 15 states. [2020-10-28 17:43:18,773 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-28 17:43:18,973 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:43:19,155 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:43:20,015 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:43:20,693 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:43:20,896 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:43:23,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:23,128 INFO L93 Difference]: Finished difference Result 11253 states and 14499 transitions. [2020-10-28 17:43:23,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 17:43:23,129 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-28 17:43:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:23,158 INFO L225 Difference]: With dead ends: 11253 [2020-10-28 17:43:23,158 INFO L226 Difference]: Without dead ends: 7372 [2020-10-28 17:43:23,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=431, Invalid=1461, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 17:43:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2020-10-28 17:43:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 7216. [2020-10-28 17:43:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7216 states. [2020-10-28 17:43:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7216 states to 7216 states and 9229 transitions. [2020-10-28 17:43:23,887 INFO L78 Accepts]: Start accepts. Automaton has 7216 states and 9229 transitions. Word has length 111 [2020-10-28 17:43:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:23,888 INFO L481 AbstractCegarLoop]: Abstraction has 7216 states and 9229 transitions. [2020-10-28 17:43:23,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:43:23,888 INFO L276 IsEmpty]: Start isEmpty. Operand 7216 states and 9229 transitions. [2020-10-28 17:43:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:43:23,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:23,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:23,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:43:23,892 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:23,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1474019335, now seen corresponding path program 1 times [2020-10-28 17:43:23,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:23,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990254991] [2020-10-28 17:43:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:25,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:28,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 17:43:28,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:29,102 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:29,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:43:29,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:29,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:43:29,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:29,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:29,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:29,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:43:29,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:29,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:29,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:43:29,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:29,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:29,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:29,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:29,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:29,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:29,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:43:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:43:29,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:43:29,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:43:29,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:29,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:43:29,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:43:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:29,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:43:29,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:29,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:43:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:29,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:43:29,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:43:29,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:43:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:29,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:29,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:43:29,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:43:29,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:29,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:29,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:43:29,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:43:29,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:43:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 17:43:29,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990254991] [2020-10-28 17:43:29,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:29,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:43:29,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207146457] [2020-10-28 17:43:29,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:43:29,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:29,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:43:29,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:43:29,635 INFO L87 Difference]: Start difference. First operand 7216 states and 9229 transitions. Second operand 15 states. [2020-10-28 17:43:29,981 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-28 17:43:30,152 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:43:30,814 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:43:31,158 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-28 17:43:31,604 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-28 17:43:32,547 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:43:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:34,645 INFO L93 Difference]: Finished difference Result 16910 states and 22060 transitions. [2020-10-28 17:43:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 17:43:34,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-28 17:43:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:34,682 INFO L225 Difference]: With dead ends: 16910 [2020-10-28 17:43:34,682 INFO L226 Difference]: Without dead ends: 10341 [2020-10-28 17:43:34,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=439, Invalid=1283, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 17:43:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10341 states. [2020-10-28 17:43:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10341 to 10056. [2020-10-28 17:43:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10056 states. [2020-10-28 17:43:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10056 states to 10056 states and 12924 transitions. [2020-10-28 17:43:35,572 INFO L78 Accepts]: Start accepts. Automaton has 10056 states and 12924 transitions. Word has length 111 [2020-10-28 17:43:35,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:35,573 INFO L481 AbstractCegarLoop]: Abstraction has 10056 states and 12924 transitions. [2020-10-28 17:43:35,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:43:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 10056 states and 12924 transitions. [2020-10-28 17:43:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 17:43:35,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:35,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:35,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:43:35,576 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1710999941, now seen corresponding path program 1 times [2020-10-28 17:43:35,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:35,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953217121] [2020-10-28 17:43:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:35,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:36,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 17:43:40,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:43:40,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:43:40,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:43:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:43:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 17:43:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,781 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:40,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:40,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:40,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:40,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:40,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:43:40,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:40,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:40,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:40,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:43:40,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:40,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:40,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:40,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:40,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:40,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:40,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:40,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:40,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:40,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:40,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:40,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:43:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:40,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:43:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:43:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:41,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:41,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:41,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:41,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:41,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:41,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:41,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:41,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:43:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:41,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:41,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:41,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:41,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:41,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:43:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:41,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:41,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:41,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:43:41,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:41,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:41,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:43:41,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:43:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:43:41,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953217121] [2020-10-28 17:43:41,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:41,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:43:41,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042339475] [2020-10-28 17:43:41,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:43:41,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:41,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:43:41,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:43:41,103 INFO L87 Difference]: Start difference. First operand 10056 states and 12924 transitions. Second operand 11 states. [2020-10-28 17:43:41,260 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:43:42,007 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:43:43,118 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:43:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:43:44,668 INFO L93 Difference]: Finished difference Result 23174 states and 30192 transitions. [2020-10-28 17:43:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 17:43:44,669 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-10-28 17:43:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:43:44,716 INFO L225 Difference]: With dead ends: 23174 [2020-10-28 17:43:44,717 INFO L226 Difference]: Without dead ends: 13195 [2020-10-28 17:43:44,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:43:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13195 states. [2020-10-28 17:43:46,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13195 to 12463. [2020-10-28 17:43:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12463 states. [2020-10-28 17:43:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12463 states to 12463 states and 15977 transitions. [2020-10-28 17:43:46,036 INFO L78 Accepts]: Start accepts. Automaton has 12463 states and 15977 transitions. Word has length 112 [2020-10-28 17:43:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:43:46,036 INFO L481 AbstractCegarLoop]: Abstraction has 12463 states and 15977 transitions. [2020-10-28 17:43:46,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:43:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 12463 states and 15977 transitions. [2020-10-28 17:43:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:43:46,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:43:46,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:46,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:43:46,040 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:43:46,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:43:46,040 INFO L82 PathProgramCache]: Analyzing trace with hash -923753905, now seen corresponding path program 1 times [2020-10-28 17:43:46,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:43:46,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496835928] [2020-10-28 17:43:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:43:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 17:43:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,268 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:43:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:43:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:43:51,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:43:51,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:43:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:43:51,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:43:51,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:43:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:43:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:43:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:43:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:51,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:43:51,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:43:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:51,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:43:51,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:43:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:43:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:43:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:51,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:43:51,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:51,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:43:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:43:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:43:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:43:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:43:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:51,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:51,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:43:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:43:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:43:51,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:43:51,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:43:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:43:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:43:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:43:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:43:51,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:43:51,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:43:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:43:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:43:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:43:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:43:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:43:51,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:43:51,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:43:51,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:43:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:43:51,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:43:51,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:43:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:43:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:43:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:43:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:43:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:43:51,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496835928] [2020-10-28 17:43:51,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:43:51,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:43:51,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106632035] [2020-10-28 17:43:51,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:43:51,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:43:51,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:43:51,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:43:51,781 INFO L87 Difference]: Start difference. First operand 12463 states and 15977 transitions. Second operand 18 states. [2020-10-28 17:43:52,136 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-28 17:43:52,342 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:43:52,808 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-28 17:43:53,587 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-28 17:43:54,269 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-28 17:43:55,034 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-28 17:43:56,045 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-28 17:43:56,286 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-28 17:43:56,929 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-28 17:43:57,121 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:43:58,229 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-28 17:43:59,422 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:44:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:02,149 INFO L93 Difference]: Finished difference Result 43468 states and 56200 transitions. [2020-10-28 17:44:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-28 17:44:02,150 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-28 17:44:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:02,300 INFO L225 Difference]: With dead ends: 43468 [2020-10-28 17:44:02,301 INFO L226 Difference]: Without dead ends: 35328 [2020-10-28 17:44:02,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=710, Invalid=2712, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 17:44:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35328 states. [2020-10-28 17:44:06,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35328 to 34520. [2020-10-28 17:44:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34520 states. [2020-10-28 17:44:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34520 states to 34520 states and 44519 transitions. [2020-10-28 17:44:06,225 INFO L78 Accepts]: Start accepts. Automaton has 34520 states and 44519 transitions. Word has length 113 [2020-10-28 17:44:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:06,226 INFO L481 AbstractCegarLoop]: Abstraction has 34520 states and 44519 transitions. [2020-10-28 17:44:06,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:44:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 34520 states and 44519 transitions. [2020-10-28 17:44:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:44:06,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:06,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:06,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:44:06,231 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:06,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:06,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1879154883, now seen corresponding path program 1 times [2020-10-28 17:44:06,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:06,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209690295] [2020-10-28 17:44:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 17:44:11,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:44:11,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:44:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:44:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:44:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 17:44:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,459 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:44:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:11,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:11,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:44:11,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:44:11,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:44:11,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:44:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:11,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:11,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:44:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:11,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:44:11,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:44:11,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:11,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:11,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,825 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-28 17:44:11,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:11,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:11,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:11,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:11,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:44:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:11,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:11,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:44:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:11,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:11,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:44:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:11,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:11,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:44:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:11,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:11,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:44:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:11,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:11,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:11,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:11,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:44:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:12,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:44:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:12,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:12,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:44:12,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:12,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:12,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:44:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:44:12,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209690295] [2020-10-28 17:44:12,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:12,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:44:12,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575529573] [2020-10-28 17:44:12,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:44:12,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:12,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:44:12,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:44:12,058 INFO L87 Difference]: Start difference. First operand 34520 states and 44519 transitions. Second operand 15 states. [2020-10-28 17:44:12,276 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:44:12,635 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:44:13,146 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 130 [2020-10-28 17:44:13,472 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:44:13,861 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:44:14,718 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2020-10-28 17:44:15,161 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:44:16,680 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:44:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:19,384 INFO L93 Difference]: Finished difference Result 67873 states and 87641 transitions. [2020-10-28 17:44:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 17:44:19,385 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 113 [2020-10-28 17:44:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:19,518 INFO L225 Difference]: With dead ends: 67873 [2020-10-28 17:44:19,519 INFO L226 Difference]: Without dead ends: 36228 [2020-10-28 17:44:19,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=479, Invalid=1971, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 17:44:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36228 states. [2020-10-28 17:44:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36228 to 35237. [2020-10-28 17:44:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35237 states. [2020-10-28 17:44:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35237 states to 35237 states and 45236 transitions. [2020-10-28 17:44:23,132 INFO L78 Accepts]: Start accepts. Automaton has 35237 states and 45236 transitions. Word has length 113 [2020-10-28 17:44:23,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:23,133 INFO L481 AbstractCegarLoop]: Abstraction has 35237 states and 45236 transitions. [2020-10-28 17:44:23,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:44:23,133 INFO L276 IsEmpty]: Start isEmpty. Operand 35237 states and 45236 transitions. [2020-10-28 17:44:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:44:23,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:23,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:23,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:44:23,137 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:23,138 INFO L82 PathProgramCache]: Analyzing trace with hash 292552589, now seen corresponding path program 1 times [2020-10-28 17:44:23,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:23,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139423441] [2020-10-28 17:44:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 17:44:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:44:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:44:28,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 17:44:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 17:44:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,325 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:44:28,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:28,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:44:28,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:28,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:44:28,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:44:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:28,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:28,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:28,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:28,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:28,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:28,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:44:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:44:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:28,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:28,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:28,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:44:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:44:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:44:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:44:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:44:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:28,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:44:28,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:28,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:44:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 17:44:28,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139423441] [2020-10-28 17:44:28,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:28,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:44:28,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780713192] [2020-10-28 17:44:28,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:44:28,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:28,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:44:28,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:44:28,559 INFO L87 Difference]: Start difference. First operand 35237 states and 45236 transitions. Second operand 9 states. [2020-10-28 17:44:28,809 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:44:29,264 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:44:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:31,224 INFO L93 Difference]: Finished difference Result 51220 states and 65648 transitions. [2020-10-28 17:44:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:44:31,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-10-28 17:44:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:31,315 INFO L225 Difference]: With dead ends: 51220 [2020-10-28 17:44:31,315 INFO L226 Difference]: Without dead ends: 18065 [2020-10-28 17:44:31,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:44:31,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18065 states. [2020-10-28 17:44:33,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18065 to 16692. [2020-10-28 17:44:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16692 states. [2020-10-28 17:44:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16692 states to 16692 states and 20895 transitions. [2020-10-28 17:44:33,147 INFO L78 Accepts]: Start accepts. Automaton has 16692 states and 20895 transitions. Word has length 113 [2020-10-28 17:44:33,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:33,148 INFO L481 AbstractCegarLoop]: Abstraction has 16692 states and 20895 transitions. [2020-10-28 17:44:33,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:44:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 16692 states and 20895 transitions. [2020-10-28 17:44:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:44:33,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:33,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:33,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:44:33,152 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:33,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash 30186253, now seen corresponding path program 1 times [2020-10-28 17:44:33,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:33,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446784722] [2020-10-28 17:44:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:36,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:36,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:36,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 17:44:38,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 17:44:38,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:44:38,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:44:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:44:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 17:44:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,385 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:44:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:38,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:44:38,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:44:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:44:38,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:44:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:44:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:38,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:38,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:44:38,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:38,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:38,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:44:38,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:44:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:38,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:44:38,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:44:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:38,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:38,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:44:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:44:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:38,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:38,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:38,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:44:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:38,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:38,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:38,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:44:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:38,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:44:38,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:44:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:44:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:44:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:38,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:38,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:38,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:44:38,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:38,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:38,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:38,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:38,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:44:38,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:44:38,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446784722] [2020-10-28 17:44:38,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:38,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:44:38,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971245220] [2020-10-28 17:44:38,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:44:38,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:38,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:44:38,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:44:38,817 INFO L87 Difference]: Start difference. First operand 16692 states and 20895 transitions. Second operand 16 states. [2020-10-28 17:44:39,003 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:44:39,503 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 17:44:39,982 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 116 [2020-10-28 17:44:40,335 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 17:44:40,509 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 17:44:40,684 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:44:41,063 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:44:41,919 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 115 [2020-10-28 17:44:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:44,047 INFO L93 Difference]: Finished difference Result 34003 states and 42546 transitions. [2020-10-28 17:44:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 17:44:44,047 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 113 [2020-10-28 17:44:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:44,109 INFO L225 Difference]: With dead ends: 34003 [2020-10-28 17:44:44,109 INFO L226 Difference]: Without dead ends: 17491 [2020-10-28 17:44:44,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=420, Invalid=1220, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 17:44:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17491 states. [2020-10-28 17:44:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17491 to 15543. [2020-10-28 17:44:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15543 states. [2020-10-28 17:44:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15543 states to 15543 states and 19268 transitions. [2020-10-28 17:44:45,653 INFO L78 Accepts]: Start accepts. Automaton has 15543 states and 19268 transitions. Word has length 113 [2020-10-28 17:44:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:44:45,653 INFO L481 AbstractCegarLoop]: Abstraction has 15543 states and 19268 transitions. [2020-10-28 17:44:45,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:44:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 15543 states and 19268 transitions. [2020-10-28 17:44:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:44:45,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:44:45,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:45,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:44:45,655 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:44:45,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:44:45,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1461872255, now seen corresponding path program 1 times [2020-10-28 17:44:45,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:44:45,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061657418] [2020-10-28 17:44:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:44:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:50,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:50,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 17:44:50,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:44:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:44:50,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:50,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:44:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:44:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 17:44:50,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:50,860 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:44:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:44:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:50,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:50,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:50,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:44:50,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:50,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:44:50,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:50,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:50,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:50,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:44:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:50,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:50,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:44:50,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:44:50,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:50,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:44:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:44:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:50,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:50,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:44:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:50,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:50,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:50,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:50,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:50,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:44:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:44:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:44:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:50,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:51,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:51,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:51,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:44:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:51,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:44:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:44:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:51,207 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-10-28 17:44:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:44:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:51,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:51,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:51,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:44:51,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:51,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:44:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:44:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:51,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:44:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:44:51,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:51,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:44:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:44:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:44:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:44:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:51,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:51,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:51,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:44:51,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:51,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:44:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:44:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:44:51,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:44:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:44:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:51,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:51,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:44:51,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:51,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:51,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:51,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:44:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:44:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:51,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:44:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:44:51,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:44:51,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:44:51,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:44:51,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:44:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:44:51,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:44:51,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:44:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:44:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:44:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:44:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:44:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:44:51,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061657418] [2020-10-28 17:44:51,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:44:51,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:44:51,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148312971] [2020-10-28 17:44:51,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:44:51,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:44:51,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:44:51,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:44:51,376 INFO L87 Difference]: Start difference. First operand 15543 states and 19268 transitions. Second operand 15 states. [2020-10-28 17:44:51,608 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:44:52,004 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:44:52,732 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-10-28 17:44:53,124 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:44:54,396 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-28 17:44:57,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:44:57,354 INFO L93 Difference]: Finished difference Result 51227 states and 63432 transitions. [2020-10-28 17:44:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 17:44:57,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 113 [2020-10-28 17:44:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:44:57,460 INFO L225 Difference]: With dead ends: 51227 [2020-10-28 17:44:57,460 INFO L226 Difference]: Without dead ends: 36579 [2020-10-28 17:44:57,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=278, Invalid=1128, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 17:44:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36579 states. [2020-10-28 17:45:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36579 to 35071. [2020-10-28 17:45:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35071 states. [2020-10-28 17:45:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35071 states to 35071 states and 43414 transitions. [2020-10-28 17:45:01,156 INFO L78 Accepts]: Start accepts. Automaton has 35071 states and 43414 transitions. Word has length 113 [2020-10-28 17:45:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:01,157 INFO L481 AbstractCegarLoop]: Abstraction has 35071 states and 43414 transitions. [2020-10-28 17:45:01,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:45:01,157 INFO L276 IsEmpty]: Start isEmpty. Operand 35071 states and 43414 transitions. [2020-10-28 17:45:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:45:01,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:01,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:01,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:45:01,160 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash -807286579, now seen corresponding path program 1 times [2020-10-28 17:45:01,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:01,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51462687] [2020-10-28 17:45:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 17:45:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,376 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:45:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:06,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:45:06,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:06,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:45:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:45:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:45:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:06,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:45:06,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:45:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:06,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:45:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:06,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:06,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:45:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:06,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:06,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:06,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:45:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:06,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:06,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:45:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:06,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:06,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:45:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:45:06,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:45:06,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:45:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:45:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:06,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:45:06,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:45:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:45:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:06,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:06,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:45:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:45:06,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:06,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:06,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:45:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 17:45:06,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51462687] [2020-10-28 17:45:06,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:45:06,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:45:06,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982613177] [2020-10-28 17:45:06,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:45:06,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:06,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:45:06,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:45:06,776 INFO L87 Difference]: Start difference. First operand 35071 states and 43414 transitions. Second operand 15 states. [2020-10-28 17:45:06,984 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:45:07,352 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 17:45:07,669 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2020-10-28 17:45:08,041 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:45:08,601 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 17:45:09,200 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:45:10,546 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:45:18,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:45:18,286 INFO L93 Difference]: Finished difference Result 135567 states and 168561 transitions. [2020-10-28 17:45:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 17:45:18,287 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 113 [2020-10-28 17:45:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:45:18,851 INFO L225 Difference]: With dead ends: 135567 [2020-10-28 17:45:18,852 INFO L226 Difference]: Without dead ends: 103121 [2020-10-28 17:45:18,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=420, Invalid=1932, Unknown=0, NotChecked=0, Total=2352 [2020-10-28 17:45:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103121 states. [2020-10-28 17:45:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103121 to 94602. [2020-10-28 17:45:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94602 states. [2020-10-28 17:45:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94602 states to 94602 states and 117955 transitions. [2020-10-28 17:45:28,470 INFO L78 Accepts]: Start accepts. Automaton has 94602 states and 117955 transitions. Word has length 113 [2020-10-28 17:45:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:45:28,470 INFO L481 AbstractCegarLoop]: Abstraction has 94602 states and 117955 transitions. [2020-10-28 17:45:28,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:45:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 94602 states and 117955 transitions. [2020-10-28 17:45:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:45:28,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:45:28,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:28,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:45:28,475 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:45:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:45:28,476 INFO L82 PathProgramCache]: Analyzing trace with hash 282803759, now seen corresponding path program 1 times [2020-10-28 17:45:28,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:45:28,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075830025] [2020-10-28 17:45:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:45:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:28,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:29,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 17:45:33,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 17:45:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 17:45:33,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:45:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:45:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 17:45:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,689 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 17:45:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:45:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:45:33,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:45:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:45:33,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:33,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:45:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:33,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:33,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:45:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:33,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:45:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:33,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:45:33,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:45:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:45:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:45:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:45:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:33,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:45:33,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:45:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:45:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:45:33,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:45:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:45:33,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:33,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:45:33,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:45:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:45:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:45:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:45:33,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:45:33,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:45:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:45:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:45:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 17:45:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:33,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:45:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:45:33,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:45:33,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:45:33,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:45:33,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:45:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:45:33,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:45:33,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:45:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:45:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:45:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:45:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:45:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:45:33,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075830025] [2020-10-28 17:45:33,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:45:33,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:45:33,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19178740] [2020-10-28 17:45:33,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:45:33,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:45:33,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:45:33,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:45:33,939 INFO L87 Difference]: Start difference. First operand 94602 states and 117955 transitions. Second operand 13 states. [2020-10-28 17:45:34,128 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 17:45:34,343 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-28 17:45:34,612 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 17:45:34,870 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 17:45:35,149 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109