/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-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:50:36,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:50:36,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:50:36,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:50:36,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:50:36,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:50:36,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:50:36,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:50:36,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:50:36,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:50:36,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:50:36,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:50:36,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:50:36,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:50:36,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:50:36,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:50:36,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:50:36,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:50:36,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:50:36,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:50:36,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:50:36,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:50:36,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:50:36,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:50:36,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:50:36,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:50:36,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:50:36,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:50:36,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:50:36,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:50:36,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:50:36,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:50:36,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:50:36,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:50:36,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:50:36,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:50:36,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:50:36,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:50:36,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:50:36,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:50:36,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:50:36,228 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 13:50:36,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:50:36,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:50:36,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:50:36,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:50:36,270 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:50:36,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:50:36,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:50:36,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:50:36,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:50:36,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:50:36,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:50:36,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:50:36,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:50:36,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:50:36,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:50:36,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:50:36,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:50:36,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:50:36,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:50:36,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:50:36,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:50:36,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:50:36,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:50:36,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:50:36,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:50:36,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:50:36,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:50:36,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:50:36,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:50:36,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:50:36,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:50:36,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:50:36,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:50:36,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:50:36,708 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:50:36,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:50:36,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84c7108e9/70d680c73f4546e4bfc9f66793cd9fa8/FLAG10311b149 [2020-10-29 13:50:37,626 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:50:37,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:50:37,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84c7108e9/70d680c73f4546e4bfc9f66793cd9fa8/FLAG10311b149 [2020-10-29 13:50:37,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84c7108e9/70d680c73f4546e4bfc9f66793cd9fa8 [2020-10-29 13:50:37,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:50:37,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:50:37,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:50:37,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:50:37,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:50:37,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:50:37" (1/1) ... [2020-10-29 13:50:37,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9f21cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:37, skipping insertion in model container [2020-10-29 13:50:37,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:50:37" (1/1) ... [2020-10-29 13:50:37,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:50:37,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:50:38,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:50:38,388 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:50:38,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:50:38,594 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:50:38,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38 WrapperNode [2020-10-29 13:50:38,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:50:38,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:50:38,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:50:38,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:50:38,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (1/1) ... [2020-10-29 13:50:38,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (1/1) ... [2020-10-29 13:50:38,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (1/1) ... [2020-10-29 13:50:38,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (1/1) ... [2020-10-29 13:50:38,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (1/1) ... [2020-10-29 13:50:38,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (1/1) ... [2020-10-29 13:50:38,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (1/1) ... [2020-10-29 13:50:38,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:50:38,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:50:38,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:50:38,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:50:38,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:50:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:50:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:50:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:50:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:50:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:50:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:50:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:50:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:50:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:50:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:50:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:50:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:50:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:50:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:50:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:50:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:50:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:50:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:50:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:50:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:50:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:50:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:50:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:50:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:50:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:50:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:50:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:50:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:50:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:50:39,952 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:50:39,953 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:50:39,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:50:39 BoogieIcfgContainer [2020-10-29 13:50:39,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:50:39,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:50:39,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:50:39,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:50:39,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:50:37" (1/3) ... [2020-10-29 13:50:39,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467cf647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:50:39, skipping insertion in model container [2020-10-29 13:50:39,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:50:38" (2/3) ... [2020-10-29 13:50:39,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467cf647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:50:39, skipping insertion in model container [2020-10-29 13:50:39,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:50:39" (3/3) ... [2020-10-29 13:50:39,965 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:50:39,978 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:50:39,983 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:50:39,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:50:40,028 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:50:40,028 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:50:40,028 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:50:40,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:50:40,028 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:50:40,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:50:40,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:50:40,029 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:50:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-10-29 13:50:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 13:50:40,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:40,066 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 13:50:40,066 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:40,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2024411493, now seen corresponding path program 1 times [2020-10-29 13:50:40,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:40,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679493441] [2020-10-29 13:50:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:45,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:45,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 13:50:45,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:50:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 13:50:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:45,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:50:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:50:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:50:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:50:46,057 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:50:46,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:46,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:46,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:46,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:46,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 13:50:46,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:46,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:46,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:50:46,179 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 13:50:46,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679493441] [2020-10-29 13:50:46,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:46,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:50:46,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389003691] [2020-10-29 13:50:46,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:50:46,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:46,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:50:46,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:50:46,219 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 8 states. [2020-10-29 13:50:46,708 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:50:48,047 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:50:48,336 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:48,589 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:50:48,842 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:50:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:49,321 INFO L93 Difference]: Finished difference Result 850 states and 1368 transitions. [2020-10-29 13:50:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:50:49,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-29 13:50:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:49,350 INFO L225 Difference]: With dead ends: 850 [2020-10-29 13:50:49,350 INFO L226 Difference]: Without dead ends: 724 [2020-10-29 13:50:49,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:50:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-29 13:50:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 320. [2020-10-29 13:50:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-29 13:50:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 475 transitions. [2020-10-29 13:50:49,475 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 475 transitions. Word has length 85 [2020-10-29 13:50:49,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:49,476 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 475 transitions. [2020-10-29 13:50:49,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:50:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 475 transitions. [2020-10-29 13:50:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 13:50:49,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:49,481 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] [2020-10-29 13:50:49,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:50:49,481 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:49,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:49,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1125009675, now seen corresponding path program 1 times [2020-10-29 13:50:49,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:49,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043383730] [2020-10-29 13:50:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:51,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:51,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 13:50:51,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:50:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-29 13:50:51,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:51,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:50:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:50:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:50:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 13:50:51,420 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:50:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:51,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:51,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:51,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:51,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:50:51,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:51,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:50:51,530 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 13:50:51,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043383730] [2020-10-29 13:50:51,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:51,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:50:51,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525367349] [2020-10-29 13:50:51,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:50:51,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:51,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:50:51,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:50:51,538 INFO L87 Difference]: Start difference. First operand 320 states and 475 transitions. Second operand 8 states. [2020-10-29 13:50:52,733 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:50:52,966 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:53,237 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:50:53,496 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:50:53,785 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:50:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:54,646 INFO L93 Difference]: Finished difference Result 1381 states and 2123 transitions. [2020-10-29 13:50:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:50:54,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-29 13:50:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:54,654 INFO L225 Difference]: With dead ends: 1381 [2020-10-29 13:50:54,655 INFO L226 Difference]: Without dead ends: 1142 [2020-10-29 13:50:54,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:50:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2020-10-29 13:50:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1130. [2020-10-29 13:50:54,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2020-10-29 13:50:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1732 transitions. [2020-10-29 13:50:54,777 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1732 transitions. Word has length 86 [2020-10-29 13:50:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:54,777 INFO L481 AbstractCegarLoop]: Abstraction has 1130 states and 1732 transitions. [2020-10-29 13:50:54,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:50:54,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1732 transitions. [2020-10-29 13:50:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:50:54,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:54,785 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 13:50:54,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:50:54,785 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:54,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:54,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1249851834, now seen corresponding path program 1 times [2020-10-29 13:50:54,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:54,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634915134] [2020-10-29 13:50:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:55,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:55,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:50:55,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:50:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-29 13:50:55,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:55,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:50:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:50:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:50:55,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:50:55,933 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:50:55,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:55,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:55,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:55,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:55,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 13:50:55,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:55,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:50:55,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:56,029 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 13:50:56,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634915134] [2020-10-29 13:50:56,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:56,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:50:56,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391564840] [2020-10-29 13:50:56,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:50:56,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:56,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:50:56,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:50:56,034 INFO L87 Difference]: Start difference. First operand 1130 states and 1732 transitions. Second operand 6 states. [2020-10-29 13:50:56,316 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:50:57,287 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:50:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:57,751 INFO L93 Difference]: Finished difference Result 2909 states and 4510 transitions. [2020-10-29 13:50:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:50:57,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-29 13:50:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:57,762 INFO L225 Difference]: With dead ends: 2909 [2020-10-29 13:50:57,763 INFO L226 Difference]: Without dead ends: 1891 [2020-10-29 13:50:57,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:50:57,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-10-29 13:50:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1888. [2020-10-29 13:50:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-10-29 13:50:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2903 transitions. [2020-10-29 13:50:57,925 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2903 transitions. Word has length 87 [2020-10-29 13:50:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:57,925 INFO L481 AbstractCegarLoop]: Abstraction has 1888 states and 2903 transitions. [2020-10-29 13:50:57,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:50:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2903 transitions. [2020-10-29 13:50:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:50:57,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:57,930 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 13:50:57,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:50:57,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:57,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1305642999, now seen corresponding path program 1 times [2020-10-29 13:50:57,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:57,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530543720] [2020-10-29 13:50:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:57,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:58,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:58,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:50:58,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:50:58,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-29 13:50:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:58,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:50:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:50:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:50:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:50:59,007 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:50:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:59,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:59,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:50:59,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:59,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:59,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:59,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:59,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:50:59,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:59,084 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 13:50:59,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530543720] [2020-10-29 13:50:59,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:59,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:50:59,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23817871] [2020-10-29 13:50:59,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:50:59,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:59,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:50:59,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:50:59,087 INFO L87 Difference]: Start difference. First operand 1888 states and 2903 transitions. Second operand 6 states. [2020-10-29 13:50:59,347 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:51:00,127 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:51:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:00,750 INFO L93 Difference]: Finished difference Result 5121 states and 7950 transitions. [2020-10-29 13:51:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:51:00,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-29 13:51:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:00,768 INFO L225 Difference]: With dead ends: 5121 [2020-10-29 13:51:00,769 INFO L226 Difference]: Without dead ends: 3379 [2020-10-29 13:51:00,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:51:00,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2020-10-29 13:51:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3376. [2020-10-29 13:51:01,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3376 states. [2020-10-29 13:51:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 5206 transitions. [2020-10-29 13:51:01,058 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 5206 transitions. Word has length 87 [2020-10-29 13:51:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:01,063 INFO L481 AbstractCegarLoop]: Abstraction has 3376 states and 5206 transitions. [2020-10-29 13:51:01,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:51:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 5206 transitions. [2020-10-29 13:51:01,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:51:01,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:01,071 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 13:51:01,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:51:01,071 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:01,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:01,072 INFO L82 PathProgramCache]: Analyzing trace with hash -743968917, now seen corresponding path program 1 times [2020-10-29 13:51:01,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:01,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037729269] [2020-10-29 13:51:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:01,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:01,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:51:01,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:51:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-29 13:51:01,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:01,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:51:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:51:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:51:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:02,221 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:51:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:02,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:02,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:02,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 13:51:02,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:02,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:51:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:51:02,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:51:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:51:02,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037729269] [2020-10-29 13:51:02,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:02,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:51:02,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245382224] [2020-10-29 13:51:02,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:51:02,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:02,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:51:02,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:51:02,302 INFO L87 Difference]: Start difference. First operand 3376 states and 5206 transitions. Second operand 6 states. [2020-10-29 13:51:02,568 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:51:03,480 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:51:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:04,268 INFO L93 Difference]: Finished difference Result 9681 states and 14973 transitions. [2020-10-29 13:51:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:51:04,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-29 13:51:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:04,307 INFO L225 Difference]: With dead ends: 9681 [2020-10-29 13:51:04,307 INFO L226 Difference]: Without dead ends: 6387 [2020-10-29 13:51:04,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:51:04,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2020-10-29 13:51:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 6384. [2020-10-29 13:51:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6384 states. [2020-10-29 13:51:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6384 states to 6384 states and 9806 transitions. [2020-10-29 13:51:04,906 INFO L78 Accepts]: Start accepts. Automaton has 6384 states and 9806 transitions. Word has length 87 [2020-10-29 13:51:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:04,907 INFO L481 AbstractCegarLoop]: Abstraction has 6384 states and 9806 transitions. [2020-10-29 13:51:04,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:51:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 6384 states and 9806 transitions. [2020-10-29 13:51:04,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:51:04,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:04,918 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 13:51:04,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:51:04,919 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:04,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1818188060, now seen corresponding path program 1 times [2020-10-29 13:51:04,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:04,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837597859] [2020-10-29 13:51:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:05,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:05,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:51:05,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:51:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-29 13:51:05,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:05,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:51:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:51:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 13:51:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:05,973 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:51:05,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:05,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:06,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:06,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:06,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:51:06,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:06,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:51:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:51:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:51:06,050 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 13:51:06,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837597859] [2020-10-29 13:51:06,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:06,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:51:06,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369300388] [2020-10-29 13:51:06,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:51:06,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:06,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:51:06,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:51:06,056 INFO L87 Difference]: Start difference. First operand 6384 states and 9806 transitions. Second operand 6 states. [2020-10-29 13:51:06,335 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:51:07,374 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:51:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:08,447 INFO L93 Difference]: Finished difference Result 18708 states and 28750 transitions. [2020-10-29 13:51:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:51:08,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-29 13:51:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:08,513 INFO L225 Difference]: With dead ends: 18708 [2020-10-29 13:51:08,513 INFO L226 Difference]: Without dead ends: 12383 [2020-10-29 13:51:08,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:51:08,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12383 states. [2020-10-29 13:51:09,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12383 to 12380. [2020-10-29 13:51:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12380 states. [2020-10-29 13:51:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 18879 transitions. [2020-10-29 13:51:09,574 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 18879 transitions. Word has length 87 [2020-10-29 13:51:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:09,575 INFO L481 AbstractCegarLoop]: Abstraction has 12380 states and 18879 transitions. [2020-10-29 13:51:09,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:51:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 18879 transitions. [2020-10-29 13:51:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:51:09,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:09,582 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 13:51:09,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:51:09,582 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:09,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:09,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1934628485, now seen corresponding path program 1 times [2020-10-29 13:51:09,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:09,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483764150] [2020-10-29 13:51:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:09,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:51:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:51:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-29 13:51:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:10,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:51:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:51:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 13:51:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:10,445 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:51:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:10,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:10,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:10,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:10,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:10,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:51:10,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:10,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:51:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:51:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:10,511 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 13:51:10,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483764150] [2020-10-29 13:51:10,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:10,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:51:10,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963605035] [2020-10-29 13:51:10,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:51:10,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:10,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:51:10,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:51:10,519 INFO L87 Difference]: Start difference. First operand 12380 states and 18879 transitions. Second operand 6 states. [2020-10-29 13:51:10,767 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:51:11,820 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:51:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:13,405 INFO L93 Difference]: Finished difference Result 36597 states and 55820 transitions. [2020-10-29 13:51:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:51:13,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 13:51:13,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:13,477 INFO L225 Difference]: With dead ends: 36597 [2020-10-29 13:51:13,477 INFO L226 Difference]: Without dead ends: 24285 [2020-10-29 13:51:13,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:51:13,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24285 states. [2020-10-29 13:51:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24285 to 24282. [2020-10-29 13:51:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24282 states. [2020-10-29 13:51:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24282 states to 24282 states and 36854 transitions. [2020-10-29 13:51:15,497 INFO L78 Accepts]: Start accepts. Automaton has 24282 states and 36854 transitions. Word has length 88 [2020-10-29 13:51:15,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:15,498 INFO L481 AbstractCegarLoop]: Abstraction has 24282 states and 36854 transitions. [2020-10-29 13:51:15,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:51:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 24282 states and 36854 transitions. [2020-10-29 13:51:15,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:51:15,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:15,508 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 13:51:15,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:51:15,509 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:15,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1121587274, now seen corresponding path program 1 times [2020-10-29 13:51:15,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:15,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468330423] [2020-10-29 13:51:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:15,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:17,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:17,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:51:17,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:51:17,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-29 13:51:17,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:17,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:51:17,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:51:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:51:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:17,947 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:51:17,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:17,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:17,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:17,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:17,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:17,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:51:17,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:17,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:51:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:51:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:18,103 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 13:51:18,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468330423] [2020-10-29 13:51:18,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:18,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:51:18,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323300666] [2020-10-29 13:51:18,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:51:18,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:18,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:51:18,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:51:18,108 INFO L87 Difference]: Start difference. First operand 24282 states and 36854 transitions. Second operand 9 states. [2020-10-29 13:51:18,424 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:51:20,472 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:51:20,846 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:51:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:27,833 INFO L93 Difference]: Finished difference Result 110374 states and 166695 transitions. [2020-10-29 13:51:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 13:51:27,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 13:51:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:28,178 INFO L225 Difference]: With dead ends: 110374 [2020-10-29 13:51:28,178 INFO L226 Difference]: Without dead ends: 100099 [2020-10-29 13:51:28,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-29 13:51:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100099 states. [2020-10-29 13:51:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100099 to 24751. [2020-10-29 13:51:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24751 states. [2020-10-29 13:51:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24751 states to 24751 states and 37533 transitions. [2020-10-29 13:51:31,961 INFO L78 Accepts]: Start accepts. Automaton has 24751 states and 37533 transitions. Word has length 88 [2020-10-29 13:51:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:31,962 INFO L481 AbstractCegarLoop]: Abstraction has 24751 states and 37533 transitions. [2020-10-29 13:51:31,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:51:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24751 states and 37533 transitions. [2020-10-29 13:51:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:51:31,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:31,974 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 13:51:31,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:51:31,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:31,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:31,975 INFO L82 PathProgramCache]: Analyzing trace with hash -675251030, now seen corresponding path program 1 times [2020-10-29 13:51:31,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:31,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740701250] [2020-10-29 13:51:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:34,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:34,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:51:34,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:51:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2366 [2020-10-29 13:51:34,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:34,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:51:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:51:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:51:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:34,852 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:51:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:34,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:34,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:34,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:51:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:34,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:51:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:51:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:34,909 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 13:51:34,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740701250] [2020-10-29 13:51:34,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:34,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:51:34,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019618963] [2020-10-29 13:51:34,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:51:34,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:34,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:51:34,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:51:34,912 INFO L87 Difference]: Start difference. First operand 24751 states and 37533 transitions. Second operand 9 states. [2020-10-29 13:51:35,286 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:51:37,875 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:51:38,203 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:51:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:46,665 INFO L93 Difference]: Finished difference Result 109885 states and 166338 transitions. [2020-10-29 13:51:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 13:51:46,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 13:51:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:46,874 INFO L225 Difference]: With dead ends: 109885 [2020-10-29 13:51:46,874 INFO L226 Difference]: Without dead ends: 104363 [2020-10-29 13:51:46,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-29 13:51:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104363 states. [2020-10-29 13:51:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104363 to 24751. [2020-10-29 13:51:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24751 states. [2020-10-29 13:51:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24751 states to 24751 states and 37531 transitions. [2020-10-29 13:51:49,964 INFO L78 Accepts]: Start accepts. Automaton has 24751 states and 37531 transitions. Word has length 88 [2020-10-29 13:51:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:49,964 INFO L481 AbstractCegarLoop]: Abstraction has 24751 states and 37531 transitions. [2020-10-29 13:51:49,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:51:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 24751 states and 37531 transitions. [2020-10-29 13:51:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:51:49,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:49,976 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 13:51:49,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:51:49,976 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:49,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1779997718, now seen corresponding path program 1 times [2020-10-29 13:51:49,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:49,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366925134] [2020-10-29 13:51:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:50,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:50,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:50,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:52,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:52,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:51:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:51:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2467 [2020-10-29 13:51:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:52,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:51:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:51:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 13:51:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:52,714 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 25 [2020-10-29 13:51:52,950 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:51:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:52,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:52,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:52,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:51:52,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:52,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:51:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:51:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:53,000 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 13:51:53,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366925134] [2020-10-29 13:51:53,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:53,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:51:53,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068467893] [2020-10-29 13:51:53,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:51:53,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:53,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:51:53,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:51:53,003 INFO L87 Difference]: Start difference. First operand 24751 states and 37531 transitions. Second operand 9 states. [2020-10-29 13:51:53,290 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:51:55,892 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:51:56,248 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:52:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:08,201 INFO L93 Difference]: Finished difference Result 134439 states and 203544 transitions. [2020-10-29 13:52:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:52:08,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 13:52:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:08,391 INFO L225 Difference]: With dead ends: 134439 [2020-10-29 13:52:08,392 INFO L226 Difference]: Without dead ends: 119399 [2020-10-29 13:52:08,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:52:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119399 states. [2020-10-29 13:52:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119399 to 25192. [2020-10-29 13:52:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25192 states. [2020-10-29 13:52:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25192 states to 25192 states and 38120 transitions. [2020-10-29 13:52:12,260 INFO L78 Accepts]: Start accepts. Automaton has 25192 states and 38120 transitions. Word has length 88 [2020-10-29 13:52:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:12,260 INFO L481 AbstractCegarLoop]: Abstraction has 25192 states and 38120 transitions. [2020-10-29 13:52:12,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:52:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 25192 states and 38120 transitions. [2020-10-29 13:52:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:52:12,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:12,271 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 13:52:12,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:52:12,272 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:12,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1690273910, now seen corresponding path program 1 times [2020-10-29 13:52:12,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:12,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956739189] [2020-10-29 13:52:12,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:14,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:14,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:52:14,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:52:14,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-10-29 13:52:14,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:14,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:52:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:52:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 13:52:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:15,041 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:52:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:15,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:15,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:15,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:52:15,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:15,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:15,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:15,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:15,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:15,115 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 13:52:15,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956739189] [2020-10-29 13:52:15,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:15,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:52:15,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320174286] [2020-10-29 13:52:15,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:52:15,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:15,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:52:15,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:52:15,118 INFO L87 Difference]: Start difference. First operand 25192 states and 38120 transitions. Second operand 9 states. [2020-10-29 13:52:15,487 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:52:18,897 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:52:19,285 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:52:34,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:34,794 INFO L93 Difference]: Finished difference Result 147207 states and 222568 transitions. [2020-10-29 13:52:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:52:34,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 13:52:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:35,186 INFO L225 Difference]: With dead ends: 147207 [2020-10-29 13:52:35,186 INFO L226 Difference]: Without dead ends: 127626 [2020-10-29 13:52:35,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:52:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127626 states. [2020-10-29 13:52:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127626 to 25618. [2020-10-29 13:52:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25618 states. [2020-10-29 13:52:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25618 states to 25618 states and 38668 transitions. [2020-10-29 13:52:40,285 INFO L78 Accepts]: Start accepts. Automaton has 25618 states and 38668 transitions. Word has length 88 [2020-10-29 13:52:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:40,285 INFO L481 AbstractCegarLoop]: Abstraction has 25618 states and 38668 transitions. [2020-10-29 13:52:40,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:52:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25618 states and 38668 transitions. [2020-10-29 13:52:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 13:52:40,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:40,296 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, 1, 1, 1, 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 13:52:40,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:52:40,297 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash 494988860, now seen corresponding path program 1 times [2020-10-29 13:52:40,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:40,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260131477] [2020-10-29 13:52:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:42,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:42,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 13:52:42,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:52:42,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-29 13:52:42,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:42,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:52:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:52:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 13:52:42,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:43,091 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:52:43,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:43,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:52:43,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:43,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:43,136 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 13:52:43,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260131477] [2020-10-29 13:52:43,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:43,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:52:43,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179986734] [2020-10-29 13:52:43,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:52:43,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:43,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:52:43,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:52:43,139 INFO L87 Difference]: Start difference. First operand 25618 states and 38668 transitions. Second operand 9 states. [2020-10-29 13:52:43,426 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:52:46,830 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:52:47,242 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:53:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:05,979 INFO L93 Difference]: Finished difference Result 140879 states and 213137 transitions. [2020-10-29 13:53:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:53:05,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 13:53:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:06,167 INFO L225 Difference]: With dead ends: 140879 [2020-10-29 13:53:06,168 INFO L226 Difference]: Without dead ends: 116838 [2020-10-29 13:53:06,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:53:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116838 states. [2020-10-29 13:53:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116838 to 25977. [2020-10-29 13:53:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25977 states. [2020-10-29 13:53:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25977 states to 25977 states and 39079 transitions. [2020-10-29 13:53:11,914 INFO L78 Accepts]: Start accepts. Automaton has 25977 states and 39079 transitions. Word has length 89 [2020-10-29 13:53:11,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:11,914 INFO L481 AbstractCegarLoop]: Abstraction has 25977 states and 39079 transitions. [2020-10-29 13:53:11,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:53:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 25977 states and 39079 transitions. [2020-10-29 13:53:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 13:53:11,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:11,923 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 13:53:11,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:53:11,924 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:11,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:11,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1946937873, now seen corresponding path program 1 times [2020-10-29 13:53:11,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:11,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648358603] [2020-10-29 13:53:11,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:12,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 13:53:12,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 13:53:12,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:12,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:53:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 13:53:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:53:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:12,467 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:53:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:12,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:12,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:12,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:53:12,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:12,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:12,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:12,503 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 13:53:12,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648358603] [2020-10-29 13:53:12,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:12,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:53:12,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982036352] [2020-10-29 13:53:12,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:53:12,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:12,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:53:12,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:53:12,506 INFO L87 Difference]: Start difference. First operand 25977 states and 39079 transitions. Second operand 5 states. [2020-10-29 13:53:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:22,343 INFO L93 Difference]: Finished difference Result 49948 states and 75209 transitions. [2020-10-29 13:53:22,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:53:22,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-29 13:53:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:22,412 INFO L225 Difference]: With dead ends: 49948 [2020-10-29 13:53:22,412 INFO L226 Difference]: Without dead ends: 49945 [2020-10-29 13:53:22,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:53:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49945 states. [2020-10-29 13:53:27,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49945 to 26617. [2020-10-29 13:53:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26617 states. [2020-10-29 13:53:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26617 states to 26617 states and 39719 transitions. [2020-10-29 13:53:27,846 INFO L78 Accepts]: Start accepts. Automaton has 26617 states and 39719 transitions. Word has length 89 [2020-10-29 13:53:27,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:27,846 INFO L481 AbstractCegarLoop]: Abstraction has 26617 states and 39719 transitions. [2020-10-29 13:53:27,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:53:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26617 states and 39719 transitions. [2020-10-29 13:53:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 13:53:27,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:27,856 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] [2020-10-29 13:53:27,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:53:27,856 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:27,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:27,857 INFO L82 PathProgramCache]: Analyzing trace with hash -353410635, now seen corresponding path program 1 times [2020-10-29 13:53:27,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:27,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121810623] [2020-10-29 13:53:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:28,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:28,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 13:53:28,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:28,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 13:53:28,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:28,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:53:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:53:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 13:53:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:28,352 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:53:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:28,405 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 13:53:28,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121810623] [2020-10-29 13:53:28,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:28,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:53:28,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832130671] [2020-10-29 13:53:28,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:53:28,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:28,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:53:28,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:53:28,407 INFO L87 Difference]: Start difference. First operand 26617 states and 39719 transitions. Second operand 5 states. [2020-10-29 13:53:28,695 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:53:30,570 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:53:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:39,755 INFO L93 Difference]: Finished difference Result 71343 states and 106683 transitions. [2020-10-29 13:53:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:53:39,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-29 13:53:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:39,824 INFO L225 Difference]: With dead ends: 71343 [2020-10-29 13:53:39,824 INFO L226 Difference]: Without dead ends: 47372 [2020-10-29 13:53:39,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:53:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47372 states. [2020-10-29 13:53:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47372 to 47369. [2020-10-29 13:53:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47369 states. [2020-10-29 13:53:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47369 states to 47369 states and 70247 transitions. [2020-10-29 13:53:49,402 INFO L78 Accepts]: Start accepts. Automaton has 47369 states and 70247 transitions. Word has length 90 [2020-10-29 13:53:49,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:49,402 INFO L481 AbstractCegarLoop]: Abstraction has 47369 states and 70247 transitions. [2020-10-29 13:53:49,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:53:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 47369 states and 70247 transitions. [2020-10-29 13:53:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 13:53:49,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:49,413 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] [2020-10-29 13:53:49,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:53:49,413 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash -704774926, now seen corresponding path program 1 times [2020-10-29 13:53:49,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:49,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122728258] [2020-10-29 13:53:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:51,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:51,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 13:53:51,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:53:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2526 [2020-10-29 13:53:51,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:51,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:53:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:53:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 13:53:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:52,260 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:53:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:52,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:52,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:52,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:53:52,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:52,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:52,302 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 13:53:52,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122728258] [2020-10-29 13:53:52,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:52,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:53:52,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24032416] [2020-10-29 13:53:52,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:53:52,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:52,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:53:52,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:53:52,304 INFO L87 Difference]: Start difference. First operand 47369 states and 70247 transitions. Second operand 8 states. [2020-10-29 13:53:52,617 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:53:54,965 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:53:55,243 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:53:55,508 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 183