/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:40:31,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:40:31,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:40:31,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:40:31,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:40:31,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:40:31,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:40:31,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:40:31,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:40:31,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:40:31,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:40:31,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:40:31,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:40:31,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:40:31,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:40:31,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:40:31,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:40:31,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:40:31,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:40:31,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:40:31,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:40:31,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:40:32,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:40:32,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:40:32,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:40:32,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:40:32,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:40:32,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:40:32,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:40:32,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:40:32,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:40:32,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:40:32,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:40:32,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:40:32,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:40:32,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:40:32,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:40:32,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:40:32,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:40:32,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:40:32,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:40:32,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:40:32,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:40:32,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:40:32,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:40:32,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:40:32,086 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:40:32,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:40:32,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:40:32,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:40:32,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:40:32,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:40:32,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:40:32,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:40:32,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:40:32,089 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:40:32,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:40:32,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:40:32,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:40:32,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:40:32,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:40:32,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:40:32,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:40:32,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:40:32,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:40:32,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:40:32,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:40:32,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:40:32,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:40:32,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:40:32,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:40:32,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:40:32,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:40:32,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:40:32,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:40:32,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:40:32,551 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:40:32,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-29 12:40:32,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a0df83e/178dd0ebec8e442fb0bb30890421a9e9/FLAG3c8284027 [2020-10-29 12:40:33,246 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:40:33,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-29 12:40:33,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a0df83e/178dd0ebec8e442fb0bb30890421a9e9/FLAG3c8284027 [2020-10-29 12:40:33,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0a0df83e/178dd0ebec8e442fb0bb30890421a9e9 [2020-10-29 12:40:33,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:40:33,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:40:33,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:40:33,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:40:33,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:40:33,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:40:33" (1/1) ... [2020-10-29 12:40:33,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651c0257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:33, skipping insertion in model container [2020-10-29 12:40:33,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:40:33" (1/1) ... [2020-10-29 12:40:33,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:40:33,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:40:34,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:40:34,077 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:40:34,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:40:34,166 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:40:34,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34 WrapperNode [2020-10-29 12:40:34,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:40:34,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:40:34,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:40:34,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:40:34,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (1/1) ... [2020-10-29 12:40:34,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (1/1) ... [2020-10-29 12:40:34,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (1/1) ... [2020-10-29 12:40:34,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (1/1) ... [2020-10-29 12:40:34,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (1/1) ... [2020-10-29 12:40:34,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (1/1) ... [2020-10-29 12:40:34,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (1/1) ... [2020-10-29 12:40:34,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:40:34,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:40:34,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:40:34,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:40:34,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:40:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:40:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:40:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:40:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:40:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:40:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:40:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:40:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:40:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:40:34,346 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:40:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:40:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:40:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:40:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:40:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:40:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:40:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:40:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:40:34,348 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:40:34,348 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:40:34,348 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:40:34,348 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:40:34,348 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:40:34,348 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:40:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:40:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:40:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:40:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:40:34,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:40:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:40:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:40:35,185 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:40:35,185 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:40:35,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:40:35 BoogieIcfgContainer [2020-10-29 12:40:35,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:40:35,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:40:35,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:40:35,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:40:35,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:40:33" (1/3) ... [2020-10-29 12:40:35,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6d1f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:40:35, skipping insertion in model container [2020-10-29 12:40:35,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:40:34" (2/3) ... [2020-10-29 12:40:35,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6d1f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:40:35, skipping insertion in model container [2020-10-29 12:40:35,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:40:35" (3/3) ... [2020-10-29 12:40:35,199 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-29 12:40:35,212 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:40:35,217 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:40:35,229 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:40:35,261 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:40:35,261 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:40:35,261 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:40:35,261 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:40:35,262 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:40:35,262 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:40:35,262 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:40:35,262 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:40:35,284 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-10-29 12:40:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 12:40:35,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:40:35,296 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] [2020-10-29 12:40:35,296 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:40:35,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:40:35,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1941608317, now seen corresponding path program 1 times [2020-10-29 12:40:35,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:40:35,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297652052] [2020-10-29 12:40:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:40:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:35,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:36,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:36,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:40:36,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-29 12:40:36,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:36,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 12:40:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:40:36,388 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:40:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:40:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:36,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:36,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:40:36,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:40:36,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:36,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:40:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:36,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:36,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:36,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:40:36,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:40:36,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:36,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:36,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:40:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:36,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:36,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:36,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:40:36,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:36,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:40:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:40:36,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:40:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:36,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:36,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:36,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:40:36,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:36,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:40:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:40:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:40:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:36,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:36,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:36,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:36,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:40:36,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:36,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:40:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:40:36,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 12:40:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:36,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:36,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:40:36,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:36,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:40:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:36,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:40:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:40:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:40:36,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297652052] [2020-10-29 12:40:36,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:40:36,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:40:36,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760772544] [2020-10-29 12:40:36,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:40:36,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:40:36,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:40:36,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:40:36,707 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 6 states. [2020-10-29 12:40:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:40:38,020 INFO L93 Difference]: Finished difference Result 287 states and 453 transitions. [2020-10-29 12:40:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:40:38,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-29 12:40:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:40:38,034 INFO L225 Difference]: With dead ends: 287 [2020-10-29 12:40:38,035 INFO L226 Difference]: Without dead ends: 175 [2020-10-29 12:40:38,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:40:38,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-29 12:40:38,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 160. [2020-10-29 12:40:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-29 12:40:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 256 transitions. [2020-10-29 12:40:38,116 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 256 transitions. Word has length 62 [2020-10-29 12:40:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:40:38,116 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 256 transitions. [2020-10-29 12:40:38,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:40:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 256 transitions. [2020-10-29 12:40:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 12:40:38,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:40:38,130 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] [2020-10-29 12:40:38,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:40:38,131 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:40:38,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:40:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1693827457, now seen corresponding path program 1 times [2020-10-29 12:40:38,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:40:38,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825163767] [2020-10-29 12:40:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:40:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:40:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-29 12:40:38,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:38,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:40:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 12:40:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:40:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:39,194 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:40:39,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:40:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:39,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:39,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:40:39,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:40:39,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:39,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:39,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:40:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:39,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:40:39,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 12:40:39,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:39,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:40:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:40:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:40:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:39,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:39,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:39,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:40:39,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:39,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:40:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:39,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:40:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:39,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:39,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:39,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:40:39,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:39,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:40:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:39,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:40:39,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:40:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:39,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:39,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:39,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:40:39,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:39,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:40:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:40:39,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 12:40:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:39,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:39,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:40:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:40:39,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:40:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:40:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:40:39,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825163767] [2020-10-29 12:40:39,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:40:39,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:40:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462051921] [2020-10-29 12:40:39,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:40:39,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:40:39,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:40:39,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:40:39,595 INFO L87 Difference]: Start difference. First operand 160 states and 256 transitions. Second operand 10 states. [2020-10-29 12:40:40,257 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:40:40,595 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 12:40:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:40:42,327 INFO L93 Difference]: Finished difference Result 288 states and 452 transitions. [2020-10-29 12:40:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:40:42,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-29 12:40:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:40:42,332 INFO L225 Difference]: With dead ends: 288 [2020-10-29 12:40:42,332 INFO L226 Difference]: Without dead ends: 184 [2020-10-29 12:40:42,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:40:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-29 12:40:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 160. [2020-10-29 12:40:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-29 12:40:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 232 transitions. [2020-10-29 12:40:42,367 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 232 transitions. Word has length 62 [2020-10-29 12:40:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:40:42,368 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 232 transitions. [2020-10-29 12:40:42,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:40:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 232 transitions. [2020-10-29 12:40:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 12:40:42,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:40:42,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:40:42,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:40:42,370 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:40:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:40:42,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1671843565, now seen corresponding path program 1 times [2020-10-29 12:40:42,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:40:42,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414717844] [2020-10-29 12:40:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:40:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:47,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:47,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:40:47,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:40:47,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 12:40:47,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:47,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:47,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:40:47,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 12:40:47,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:40:47,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:40:47,756 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:40:47,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:40:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:47,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:47,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:40:47,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:47,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:40:47,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:47,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:47,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:47,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:40:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:47,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:47,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:47,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 12:40:47,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:40:47,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:47,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:40:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:40:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:47,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:40:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:47,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:47,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:47,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:40:47,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:47,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:40:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:40:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:47,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:40:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:47,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:47,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:47,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:47,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:40:47,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:47,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:40:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:40:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:40:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:40:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:40:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:48,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:48,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:48,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:48,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:40:48,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:48,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:40:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:48,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:48,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:40:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:48,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:48,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:40:48,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:40:48,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:48,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:40:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:40:48,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414717844] [2020-10-29 12:40:48,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:40:48,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:40:48,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599096946] [2020-10-29 12:40:48,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:40:48,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:40:48,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:40:48,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:40:48,092 INFO L87 Difference]: Start difference. First operand 160 states and 232 transitions. Second operand 9 states. [2020-10-29 12:40:48,430 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:40:51,090 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:40:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:40:51,361 INFO L93 Difference]: Finished difference Result 383 states and 577 transitions. [2020-10-29 12:40:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:40:51,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-29 12:40:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:40:51,366 INFO L225 Difference]: With dead ends: 383 [2020-10-29 12:40:51,366 INFO L226 Difference]: Without dead ends: 285 [2020-10-29 12:40:51,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:40:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-29 12:40:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 249. [2020-10-29 12:40:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-29 12:40:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 370 transitions. [2020-10-29 12:40:51,428 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 370 transitions. Word has length 85 [2020-10-29 12:40:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:40:51,429 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 370 transitions. [2020-10-29 12:40:51,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:40:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 370 transitions. [2020-10-29 12:40:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 12:40:51,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:40:51,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:40:51,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:40:51,432 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:40:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:40:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1981337922, now seen corresponding path program 1 times [2020-10-29 12:40:51,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:40:51,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521058661] [2020-10-29 12:40:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:40:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:51,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:56,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:56,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:40:56,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:40:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 12:40:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:56,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:40:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:40:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:40:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:56,828 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:40:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:40:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:56,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:56,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:40:56,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:40:56,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:56,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:40:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:56,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:56,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 12:40:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 12:40:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:56,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:40:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:40:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:56,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:40:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:57,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:57,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:57,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:40:57,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:57,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:40:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:40:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:40:57,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:57,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:40:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:57,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:57,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:40:57,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:57,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:40:57,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:57,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:40:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:40:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:40:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:40:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:57,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:57,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:57,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:40:57,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:40:57,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:57,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:40:57,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:57,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:40:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:40:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:40:57,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:40:57,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:40:57,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:40:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:40:57,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:40:57,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:40:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:40:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:40:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:40:57,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:40:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:40:57,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521058661] [2020-10-29 12:40:57,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:40:57,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:40:57,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875404180] [2020-10-29 12:40:57,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:40:57,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:40:57,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:40:57,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:40:57,174 INFO L87 Difference]: Start difference. First operand 249 states and 370 transitions. Second operand 9 states. [2020-10-29 12:40:57,504 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:40:57,863 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:40:58,273 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:40:58,624 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:40:59,505 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:41:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:41:01,987 INFO L93 Difference]: Finished difference Result 749 states and 1123 transitions. [2020-10-29 12:41:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:41:01,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 12:41:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:41:01,993 INFO L225 Difference]: With dead ends: 749 [2020-10-29 12:41:01,993 INFO L226 Difference]: Without dead ends: 522 [2020-10-29 12:41:01,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:41:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-10-29 12:41:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 467. [2020-10-29 12:41:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-29 12:41:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 682 transitions. [2020-10-29 12:41:02,056 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 682 transitions. Word has length 87 [2020-10-29 12:41:02,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:41:02,057 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 682 transitions. [2020-10-29 12:41:02,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:41:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 682 transitions. [2020-10-29 12:41:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:41:02,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:41:02,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:41:02,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:41:02,060 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:41:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:41:02,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1862171645, now seen corresponding path program 1 times [2020-10-29 12:41:02,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:41:02,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914437906] [2020-10-29 12:41:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:41:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:02,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:02,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:41:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:41:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 12:41:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:07,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:41:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:41:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:41:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:07,485 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:41:07,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:41:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:07,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:41:07,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:41:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:07,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:41:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:07,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:07,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 12:41:07,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:41:07,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:07,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:41:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:41:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:07,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:41:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:07,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:07,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:41:07,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:41:07,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:07,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:41:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:41:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:07,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:07,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:07,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:41:07,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:07,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:41:07,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:07,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:41:07,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:41:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:07,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:41:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:07,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:41:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:41:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:07,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:41:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:41:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 12:41:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:07,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:41:07,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:07,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:41:07,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:07,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:41:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:41:07,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914437906] [2020-10-29 12:41:07,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:41:07,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:41:07,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868491569] [2020-10-29 12:41:07,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:41:07,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:41:07,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:41:07,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:41:07,821 INFO L87 Difference]: Start difference. First operand 467 states and 682 transitions. Second operand 9 states. [2020-10-29 12:41:08,168 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:41:08,506 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:41:08,949 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:41:09,293 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:41:10,168 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:41:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:41:12,681 INFO L93 Difference]: Finished difference Result 1447 states and 2138 transitions. [2020-10-29 12:41:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:41:12,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 12:41:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:41:12,691 INFO L225 Difference]: With dead ends: 1447 [2020-10-29 12:41:12,691 INFO L226 Difference]: Without dead ends: 1000 [2020-10-29 12:41:12,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:41:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-10-29 12:41:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 901. [2020-10-29 12:41:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-29 12:41:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1293 transitions. [2020-10-29 12:41:12,783 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1293 transitions. Word has length 88 [2020-10-29 12:41:12,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:41:12,784 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1293 transitions. [2020-10-29 12:41:12,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:41:12,784 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1293 transitions. [2020-10-29 12:41:12,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:41:12,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:41:12,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:41:12,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:41:12,788 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:41:12,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:41:12,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1575604514, now seen corresponding path program 1 times [2020-10-29 12:41:12,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:41:12,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296336931] [2020-10-29 12:41:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:41:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:12,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:17,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:17,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:41:17,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:41:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 12:41:17,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:17,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:41:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:41:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:41:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:18,217 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:41:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:41:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:18,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:18,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:41:18,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:41:18,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:18,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:41:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:18,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:18,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:18,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 12:41:18,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:18,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:41:18,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:18,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:41:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:41:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:41:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:18,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:18,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:41:18,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:41:18,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:18,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:41:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:41:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:18,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:41:18,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:41:18,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:18,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:41:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:41:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:41:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:18,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:18,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:41:18,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:41:18,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:18,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:41:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:18,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:41:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 12:41:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:18,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:18,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:41:18,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:41:18,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:18,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:18,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:41:18,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:18,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:41:18,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296336931] [2020-10-29 12:41:18,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:41:18,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:41:18,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260770003] [2020-10-29 12:41:18,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:41:18,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:41:18,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:41:18,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:41:18,633 INFO L87 Difference]: Start difference. First operand 901 states and 1293 transitions. Second operand 9 states. [2020-10-29 12:41:18,977 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:41:19,280 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:41:19,607 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:41:19,959 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:41:20,863 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:41:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:41:23,099 INFO L93 Difference]: Finished difference Result 2799 states and 4056 transitions. [2020-10-29 12:41:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:41:23,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 12:41:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:41:23,111 INFO L225 Difference]: With dead ends: 2799 [2020-10-29 12:41:23,111 INFO L226 Difference]: Without dead ends: 1912 [2020-10-29 12:41:23,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:41:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-10-29 12:41:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1749. [2020-10-29 12:41:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2020-10-29 12:41:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2474 transitions. [2020-10-29 12:41:23,279 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2474 transitions. Word has length 88 [2020-10-29 12:41:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:41:23,280 INFO L481 AbstractCegarLoop]: Abstraction has 1749 states and 2474 transitions. [2020-10-29 12:41:23,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:41:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2474 transitions. [2020-10-29 12:41:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:41:23,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:41:23,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:41:23,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:41:23,284 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:41:23,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:41:23,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1741130083, now seen corresponding path program 1 times [2020-10-29 12:41:23,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:41:23,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606387007] [2020-10-29 12:41:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:41:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:23,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:28,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:28,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:41:28,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:41:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:41:28,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:28,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:41:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:41:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 12:41:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:28,657 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:41:28,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:41:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:28,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:28,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:41:28,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:41:28,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:28,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:28,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:41:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:28,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:28,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 12:41:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:41:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:28,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:41:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:41:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:28,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:28,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:41:28,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:41:28,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:28,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:41:28,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:41:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:28,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:28,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:28,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:41:28,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:41:28,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:28,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:28,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:41:28,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:41:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:28,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:28,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:41:28,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:41:28,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:28,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:41:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:41:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:41:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:28,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:41:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:28,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:28,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:41:28,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:41:28,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:28,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:41:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:41:28,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606387007] [2020-10-29 12:41:28,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:41:28,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:41:28,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132152208] [2020-10-29 12:41:28,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:41:28,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:41:28,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:41:28,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:41:28,992 INFO L87 Difference]: Start difference. First operand 1749 states and 2474 transitions. Second operand 9 states. [2020-10-29 12:41:29,326 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:41:32,155 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:41:32,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:41:32,410 INFO L93 Difference]: Finished difference Result 4795 states and 6990 transitions. [2020-10-29 12:41:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:41:32,416 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 12:41:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:41:32,434 INFO L225 Difference]: With dead ends: 4795 [2020-10-29 12:41:32,434 INFO L226 Difference]: Without dead ends: 3412 [2020-10-29 12:41:32,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:41:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2020-10-29 12:41:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3041. [2020-10-29 12:41:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3041 states. [2020-10-29 12:41:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4370 transitions. [2020-10-29 12:41:32,744 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4370 transitions. Word has length 89 [2020-10-29 12:41:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:41:32,744 INFO L481 AbstractCegarLoop]: Abstraction has 3041 states and 4370 transitions. [2020-10-29 12:41:32,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:41:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4370 transitions. [2020-10-29 12:41:32,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:41:32,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:41:32,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:41:32,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:41:32,750 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:41:32,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:41:32,750 INFO L82 PathProgramCache]: Analyzing trace with hash -822283896, now seen corresponding path program 1 times [2020-10-29 12:41:32,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:41:32,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34691576] [2020-10-29 12:41:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:41:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:32,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:32,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:33,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:37,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 12:41:37,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:38,092 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:41:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:41:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:38,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:38,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:41:38,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:41:38,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:38,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:41:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:38,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:38,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 12:41:38,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:41:38,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:38,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:41:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:41:38,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:38,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:41:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:38,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:38,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:41:38,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:38,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:41:38,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:38,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:41:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:38,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:41:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:38,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:38,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:41:38,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:41:38,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:38,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:41:38,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:41:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:38,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:38,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:41:38,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:38,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:41:38,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:38,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:38,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:38,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:41:38,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:41:38,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:41:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:38,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:41:38,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:41:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:38,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:41:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:41:38,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34691576] [2020-10-29 12:41:38,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:41:38,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:41:38,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494859677] [2020-10-29 12:41:38,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:41:38,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:41:38,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:41:38,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:41:38,481 INFO L87 Difference]: Start difference. First operand 3041 states and 4370 transitions. Second operand 9 states. [2020-10-29 12:41:38,844 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:41:39,202 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:41:39,663 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:41:40,293 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-29 12:41:41,201 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:41:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:41:44,574 INFO L93 Difference]: Finished difference Result 10435 states and 15262 transitions. [2020-10-29 12:41:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:41:44,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-29 12:41:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:41:44,622 INFO L225 Difference]: With dead ends: 10435 [2020-10-29 12:41:44,623 INFO L226 Difference]: Without dead ends: 7690 [2020-10-29 12:41:44,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:41:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2020-10-29 12:41:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 7076. [2020-10-29 12:41:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7076 states. [2020-10-29 12:41:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7076 states to 7076 states and 10099 transitions. [2020-10-29 12:41:45,263 INFO L78 Accepts]: Start accepts. Automaton has 7076 states and 10099 transitions. Word has length 91 [2020-10-29 12:41:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:41:45,263 INFO L481 AbstractCegarLoop]: Abstraction has 7076 states and 10099 transitions. [2020-10-29 12:41:45,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:41:45,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7076 states and 10099 transitions. [2020-10-29 12:41:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:41:45,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:41:45,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:41:45,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:41:45,274 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:41:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:41:45,275 INFO L82 PathProgramCache]: Analyzing trace with hash 882560053, now seen corresponding path program 1 times [2020-10-29 12:41:45,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:41:45,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905121831] [2020-10-29 12:41:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:41:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:45,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:50,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:50,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:41:50,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:41:50,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:41:50,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:50,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:41:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:41:50,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:41:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:50,619 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:41:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:41:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:41:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:50,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:50,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:50,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:41:50,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:41:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:41:50,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:50,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:41:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:41:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:50,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:41:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:50,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:41:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:50,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:41:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:50,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:41:50,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:41:50,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:50,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:41:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:41:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:41:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:50,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:50,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:41:50,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:50,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:41:50,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:50,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:41:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:41:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:41:50,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:50,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:41:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:50,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:41:50,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:41:50,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:41:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:41:50,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:41:50,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:41:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:41:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:41:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:41:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:41:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:41:50,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905121831] [2020-10-29 12:41:50,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:41:50,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:41:50,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346038890] [2020-10-29 12:41:50,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:41:50,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:41:50,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:41:50,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:41:50,961 INFO L87 Difference]: Start difference. First operand 7076 states and 10099 transitions. Second operand 9 states. [2020-10-29 12:41:51,320 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:41:51,678 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:41:52,361 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-29 12:41:52,744 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:41:53,923 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:41:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:41:58,126 INFO L93 Difference]: Finished difference Result 24010 states and 34708 transitions. [2020-10-29 12:41:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:41:58,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-29 12:41:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:41:58,225 INFO L225 Difference]: With dead ends: 24010 [2020-10-29 12:41:58,225 INFO L226 Difference]: Without dead ends: 17650 [2020-10-29 12:41:58,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:41:58,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17650 states. [2020-10-29 12:41:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17650 to 16378. [2020-10-29 12:41:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16378 states. [2020-10-29 12:41:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16378 states to 16378 states and 23158 transitions. [2020-10-29 12:41:59,840 INFO L78 Accepts]: Start accepts. Automaton has 16378 states and 23158 transitions. Word has length 92 [2020-10-29 12:41:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:41:59,841 INFO L481 AbstractCegarLoop]: Abstraction has 16378 states and 23158 transitions. [2020-10-29 12:41:59,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:41:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16378 states and 23158 transitions. [2020-10-29 12:41:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:41:59,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:41:59,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:41:59,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:41:59,874 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:41:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:41:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash 625381272, now seen corresponding path program 1 times [2020-10-29 12:41:59,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:41:59,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816369886] [2020-10-29 12:41:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:41:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:41:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:41:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:00,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:42:04,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:42:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4502 [2020-10-29 12:42:04,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:42:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 12:42:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:04,724 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:04,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:42:04,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:42:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:42:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:04,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:42:04,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:42:04,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:04,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:42:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:42:04,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:42:04,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:42:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:04,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:42:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:42:04,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:42:04,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:42:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:42:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:42:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:04,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:04,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:04,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:42:04,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:04,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:05,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816369886] [2020-10-29 12:42:05,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:05,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:42:05,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734551383] [2020-10-29 12:42:05,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:42:05,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:05,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:42:05,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:42:05,018 INFO L87 Difference]: Start difference. First operand 16378 states and 23158 transitions. Second operand 9 states. [2020-10-29 12:42:05,348 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:05,648 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:42:05,973 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:42:06,288 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:42:07,173 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:42:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:11,275 INFO L93 Difference]: Finished difference Result 47629 states and 67988 transitions. [2020-10-29 12:42:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:42:11,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-29 12:42:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:11,433 INFO L225 Difference]: With dead ends: 47629 [2020-10-29 12:42:11,434 INFO L226 Difference]: Without dead ends: 31892 [2020-10-29 12:42:11,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:42:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31892 states. [2020-10-29 12:42:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31892 to 29830. [2020-10-29 12:42:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29830 states. [2020-10-29 12:42:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29830 states to 29830 states and 41474 transitions. [2020-10-29 12:42:14,590 INFO L78 Accepts]: Start accepts. Automaton has 29830 states and 41474 transitions. Word has length 92 [2020-10-29 12:42:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:42:14,591 INFO L481 AbstractCegarLoop]: Abstraction has 29830 states and 41474 transitions. [2020-10-29 12:42:14,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:42:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 29830 states and 41474 transitions. [2020-10-29 12:42:14,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:42:14,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:14,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:42:14,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:42:14,633 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:14,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:14,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1055345028, now seen corresponding path program 1 times [2020-10-29 12:42:14,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:14,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890655650] [2020-10-29 12:42:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:14,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:14,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:17,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:19,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:19,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:42:19,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:42:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:42:19,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:19,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:42:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:42:19,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:19,972 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:19,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:19,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:19,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:42:19,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:19,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:20,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:20,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:20,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:42:20,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:42:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 12:42:20,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:20,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:42:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:42:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:42:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:20,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:20,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:20,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:42:20,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:20,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:42:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:20,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:42:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:20,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:20,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:42:20,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:42:20,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:20,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:42:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:20,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:42:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:20,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:42:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:20,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:42:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:20,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:20,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:20,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:20,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:42:20,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:20,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:42:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:20,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890655650] [2020-10-29 12:42:20,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:20,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:42:20,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943682239] [2020-10-29 12:42:20,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:42:20,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:20,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:42:20,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:42:20,335 INFO L87 Difference]: Start difference. First operand 29830 states and 41474 transitions. Second operand 9 states. [2020-10-29 12:42:20,681 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:21,014 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:42:21,397 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:42:21,736 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:42:23,062 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:28,182 INFO L93 Difference]: Finished difference Result 51586 states and 71315 transitions. [2020-10-29 12:42:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:42:28,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-29 12:42:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:28,328 INFO L225 Difference]: With dead ends: 51586 [2020-10-29 12:42:28,328 INFO L226 Difference]: Without dead ends: 39280 [2020-10-29 12:42:28,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:42:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39280 states. [2020-10-29 12:42:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39280 to 34757. [2020-10-29 12:42:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34757 states. [2020-10-29 12:42:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34757 states to 34757 states and 47657 transitions. [2020-10-29 12:42:30,751 INFO L78 Accepts]: Start accepts. Automaton has 34757 states and 47657 transitions. Word has length 93 [2020-10-29 12:42:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:42:30,752 INFO L481 AbstractCegarLoop]: Abstraction has 34757 states and 47657 transitions. [2020-10-29 12:42:30,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:42:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 34757 states and 47657 transitions. [2020-10-29 12:42:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:42:31,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:42:31,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:42:31,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:42:31,013 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:42:31,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:42:31,013 INFO L82 PathProgramCache]: Analyzing trace with hash 95804052, now seen corresponding path program 1 times [2020-10-29 12:42:31,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:42:31,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332284250] [2020-10-29 12:42:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:42:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:31,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:31,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:42:34,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:42:34,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3025 [2020-10-29 12:42:34,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:42:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 12:42:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:42:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,385 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:42:34,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:42:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:42:34,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:42:34,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:42:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:34,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:42:34,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:42:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 12:42:34,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:42:34,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:42:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:42:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:42:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:42:34,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:42:34,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:42:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:42:34,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:42:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:42:34,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:42:34,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:34,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:42:34,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:42:34,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:42:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:42:34,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:42:34,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:42:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:42:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:42:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:42:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:42:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:42:34,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:42:34,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:42:34,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:42:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:42:34,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:42:34,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:42:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:42:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:42:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:42:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:42:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:42:34,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332284250] [2020-10-29 12:42:34,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:42:34,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:42:34,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344065319] [2020-10-29 12:42:34,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:42:34,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:42:34,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:42:34,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:42:34,784 INFO L87 Difference]: Start difference. First operand 34757 states and 47657 transitions. Second operand 13 states. [2020-10-29 12:42:35,166 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:42:35,797 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:42:36,111 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:42:39,444 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:42:39,779 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 12:42:40,527 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:42:49,667 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-29 12:42:53,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:42:53,465 INFO L93 Difference]: Finished difference Result 188030 states and 264946 transitions. [2020-10-29 12:42:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 12:42:53,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2020-10-29 12:42:53,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:42:54,734 INFO L225 Difference]: With dead ends: 188030 [2020-10-29 12:42:54,734 INFO L226 Difference]: Without dead ends: 159522 [2020-10-29 12:42:54,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=639, Invalid=2223, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 12:42:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159522 states. [2020-10-29 12:43:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159522 to 142977. [2020-10-29 12:43:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142977 states. [2020-10-29 12:43:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142977 states to 142977 states and 196874 transitions. [2020-10-29 12:43:06,354 INFO L78 Accepts]: Start accepts. Automaton has 142977 states and 196874 transitions. Word has length 93 [2020-10-29 12:43:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:43:06,355 INFO L481 AbstractCegarLoop]: Abstraction has 142977 states and 196874 transitions. [2020-10-29 12:43:06,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:43:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 142977 states and 196874 transitions. [2020-10-29 12:43:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:43:06,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:43:06,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:43:06,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:43:06,476 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:43:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:43:06,476 INFO L82 PathProgramCache]: Analyzing trace with hash 140641116, now seen corresponding path program 1 times [2020-10-29 12:43:06,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:43:06,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083775481] [2020-10-29 12:43:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:43:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:11,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:11,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:43:11,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:43:11,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4760 [2020-10-29 12:43:11,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:11,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:43:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 12:43:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:43:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:11,595 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:43:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:43:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:11,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:11,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:43:11,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:43:11,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:11,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:43:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:11,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:43:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:43:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:11,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:11,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 12:43:11,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:43:11,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:11,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:43:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:43:11,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:11,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:43:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:11,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:11,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:43:11,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:43:11,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:11,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:43:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:43:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:43:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:11,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:43:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:11,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:43:11,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:43:11,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:11,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:11,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:43:11,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:43:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:11,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:11,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:43:11,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:43:11,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:11,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:43:11,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:43:11,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:43:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:43:11,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:43:11,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:43:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:43:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:43:11,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083775481] [2020-10-29 12:43:11,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:43:11,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:43:11,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129587012] [2020-10-29 12:43:11,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:43:11,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:43:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:43:11,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:43:11,872 INFO L87 Difference]: Start difference. First operand 142977 states and 196874 transitions. Second operand 10 states. [2020-10-29 12:43:12,237 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:43:12,884 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:43:13,555 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 12:43:16,364 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:43:16,678 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:43:35,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:43:35,940 INFO L93 Difference]: Finished difference Result 492170 states and 673771 transitions. [2020-10-29 12:43:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 12:43:35,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-29 12:43:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:43:37,869 INFO L225 Difference]: With dead ends: 492170 [2020-10-29 12:43:37,869 INFO L226 Difference]: Without dead ends: 356714 [2020-10-29 12:43:38,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:43:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356714 states.