/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.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:52:03,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:52:03,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:52:03,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:52:03,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:52:03,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:52:03,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:52:03,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:52:03,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:52:03,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:52:03,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:52:03,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:52:03,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:52:03,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:52:03,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:52:03,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:52:03,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:52:03,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:52:03,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:52:03,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:52:03,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:52:03,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:52:03,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:52:03,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:52:03,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:52:03,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:52:03,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:52:03,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:52:03,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:52:03,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:52:03,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:52:03,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:52:03,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:52:03,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:52:03,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:52:03,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:52:03,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:52:03,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:52:03,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:52:03,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:52:03,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:52:03,163 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 13:52:03,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:52:03,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:52:03,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:52:03,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:52:03,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:52:03,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:52:03,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:52:03,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:52:03,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:52:03,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:52:03,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:52:03,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:52:03,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:52:03,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:52:03,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:52:03,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:52:03,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:52:03,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:52:03,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:52:03,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:52:03,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:52:03,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:52:03,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:52:03,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:52:03,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:52:03,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:52:03,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:52:03,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:52:03,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:52:03,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:52:03,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:52:03,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:52:03,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:52:03,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:52:03,710 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:52:03,711 INFO L432 ainManager$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.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-29 13:52:03,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb58f706b/5d64fae3b20c46a2bfa9d88dda588812/FLAG4e8c05d69 [2020-10-29 13:52:04,517 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:52:04,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-29 13:52:04,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb58f706b/5d64fae3b20c46a2bfa9d88dda588812/FLAG4e8c05d69 [2020-10-29 13:52:04,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb58f706b/5d64fae3b20c46a2bfa9d88dda588812 [2020-10-29 13:52:04,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:52:04,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:52:04,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:52:04,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:52:04,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:52:04,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:52:04" (1/1) ... [2020-10-29 13:52:04,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62749427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:04, skipping insertion in model container [2020-10-29 13:52:04,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:52:04" (1/1) ... [2020-10-29 13:52:04,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:52:04,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:52:05,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:52:05,288 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:52:05,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:52:05,552 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:52:05,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05 WrapperNode [2020-10-29 13:52:05,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:52:05,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:52:05,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:52:05,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:52:05,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (1/1) ... [2020-10-29 13:52:05,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (1/1) ... [2020-10-29 13:52:05,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (1/1) ... [2020-10-29 13:52:05,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (1/1) ... [2020-10-29 13:52:05,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (1/1) ... [2020-10-29 13:52:05,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (1/1) ... [2020-10-29 13:52:05,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (1/1) ... [2020-10-29 13:52:05,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:52:05,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:52:05,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:52:05,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:52:05,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (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 13:52:05,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:52:05,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:52:05,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:52:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:52:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:52:05,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:52:05,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:52:05,843 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:52:05,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:52:05,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:52:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:52:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:52:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:52:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:52:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:52:05,846 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:52:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:52:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:52:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:52:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:52:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:52:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:52:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:52:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:52:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:52:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:52:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:52:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:52:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:52:07,230 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:52:07,231 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:52:07,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:52:07 BoogieIcfgContainer [2020-10-29 13:52:07,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:52:07,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:52:07,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:52:07,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:52:07,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:52:04" (1/3) ... [2020-10-29 13:52:07,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f36c8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:52:07, skipping insertion in model container [2020-10-29 13:52:07,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:05" (2/3) ... [2020-10-29 13:52:07,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f36c8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:52:07, skipping insertion in model container [2020-10-29 13:52:07,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:52:07" (3/3) ... [2020-10-29 13:52:07,243 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-29 13:52:07,253 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:52:07,258 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:52:07,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:52:07,300 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:52:07,301 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:52:07,301 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:52:07,301 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:52:07,301 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:52:07,301 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:52:07,302 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:52:07,302 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:52:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states. [2020-10-29 13:52:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 13:52:07,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:07,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:52:07,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:07,352 INFO L82 PathProgramCache]: Analyzing trace with hash 880061447, now seen corresponding path program 1 times [2020-10-29 13:52:07,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:07,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706163389] [2020-10-29 13:52:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:07,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:10,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:12,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:12,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 13:52:12,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:52:12,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:52:12,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:12,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 13:52:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:52:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:52:13,227 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:52:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:13,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:13,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:13,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:13,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:52:13,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:13,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:13,317 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 13:52:13,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706163389] [2020-10-29 13:52:13,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:13,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:52:13,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525953897] [2020-10-29 13:52:13,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:52:13,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:13,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:52:13,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:52:13,352 INFO L87 Difference]: Start difference. First operand 339 states. Second operand 4 states. [2020-10-29 13:52:13,841 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:52:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:16,062 INFO L93 Difference]: Finished difference Result 650 states and 1046 transitions. [2020-10-29 13:52:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:16,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-29 13:52:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:16,095 INFO L225 Difference]: With dead ends: 650 [2020-10-29 13:52:16,095 INFO L226 Difference]: Without dead ends: 524 [2020-10-29 13:52:16,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-29 13:52:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 499. [2020-10-29 13:52:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-10-29 13:52:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 803 transitions. [2020-10-29 13:52:16,220 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 803 transitions. Word has length 84 [2020-10-29 13:52:16,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:16,221 INFO L481 AbstractCegarLoop]: Abstraction has 499 states and 803 transitions. [2020-10-29 13:52:16,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:52:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 803 transitions. [2020-10-29 13:52:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 13:52:16,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:16,229 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 13:52:16,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:52:16,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:16,231 INFO L82 PathProgramCache]: Analyzing trace with hash -452342876, now seen corresponding path program 1 times [2020-10-29 13:52:16,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:16,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558451725] [2020-10-29 13:52:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:16,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:16,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:17,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 13:52:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:52:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:52:21,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:21,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 13:52:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:52:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:21,648 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:52:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:21,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:21,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:21,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:21,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:21,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:52:21,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:21,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:21,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:21,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:21,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:21,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:21,696 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 13:52:21,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558451725] [2020-10-29 13:52:21,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:21,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:52:21,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13767860] [2020-10-29 13:52:21,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:52:21,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:21,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:52:21,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:52:21,701 INFO L87 Difference]: Start difference. First operand 499 states and 803 transitions. Second operand 4 states. [2020-10-29 13:52:22,023 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:52:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:24,202 INFO L93 Difference]: Finished difference Result 1143 states and 1823 transitions. [2020-10-29 13:52:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:24,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-29 13:52:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:24,212 INFO L225 Difference]: With dead ends: 1143 [2020-10-29 13:52:24,212 INFO L226 Difference]: Without dead ends: 884 [2020-10-29 13:52:24,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-10-29 13:52:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 837. [2020-10-29 13:52:24,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-10-29 13:52:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1337 transitions. [2020-10-29 13:52:24,312 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1337 transitions. Word has length 85 [2020-10-29 13:52:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:24,313 INFO L481 AbstractCegarLoop]: Abstraction has 837 states and 1337 transitions. [2020-10-29 13:52:24,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:52:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1337 transitions. [2020-10-29 13:52:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 13:52:24,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:24,319 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 13:52:24,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:52:24,320 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:24,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:24,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2134267711, now seen corresponding path program 1 times [2020-10-29 13:52:24,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:24,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282136077] [2020-10-29 13:52:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:29,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:29,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 13:52:29,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:52:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:52:29,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:29,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:29,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:29,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:52:29,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:52:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:29,746 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:52:29,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:29,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:29,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:29,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:52:29,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:29,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:29,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:29,814 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 13:52:29,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282136077] [2020-10-29 13:52:29,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:29,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:52:29,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542860911] [2020-10-29 13:52:29,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:52:29,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:29,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:52:29,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:52:29,817 INFO L87 Difference]: Start difference. First operand 837 states and 1337 transitions. Second operand 4 states. [2020-10-29 13:52:30,163 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:52:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:32,527 INFO L93 Difference]: Finished difference Result 2081 states and 3302 transitions. [2020-10-29 13:52:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:32,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-10-29 13:52:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:32,541 INFO L225 Difference]: With dead ends: 2081 [2020-10-29 13:52:32,541 INFO L226 Difference]: Without dead ends: 1558 [2020-10-29 13:52:32,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-10-29 13:52:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1467. [2020-10-29 13:52:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-10-29 13:52:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2326 transitions. [2020-10-29 13:52:32,655 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2326 transitions. Word has length 86 [2020-10-29 13:52:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:32,656 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 2326 transitions. [2020-10-29 13:52:32,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:52:32,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2326 transitions. [2020-10-29 13:52:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:52:32,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:32,663 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 13:52:32,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:52:32,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:32,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:32,666 INFO L82 PathProgramCache]: Analyzing trace with hash -888021929, now seen corresponding path program 1 times [2020-10-29 13:52:32,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:32,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431976420] [2020-10-29 13:52:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:32,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:32,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:37,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:37,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:52:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:52:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:52:37,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:37,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:52:37,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:52:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:38,113 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:52:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:38,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:38,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:38,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:52:38,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:38,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:38,164 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 13:52:38,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431976420] [2020-10-29 13:52:38,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:38,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:52:38,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569253670] [2020-10-29 13:52:38,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:52:38,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:38,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:52:38,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:52:38,170 INFO L87 Difference]: Start difference. First operand 1467 states and 2326 transitions. Second operand 4 states. [2020-10-29 13:52:38,505 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:52:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:40,437 INFO L93 Difference]: Finished difference Result 3855 states and 6081 transitions. [2020-10-29 13:52:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:40,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-29 13:52:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:40,454 INFO L225 Difference]: With dead ends: 3855 [2020-10-29 13:52:40,454 INFO L226 Difference]: Without dead ends: 2796 [2020-10-29 13:52:40,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2020-10-29 13:52:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2617. [2020-10-29 13:52:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2617 states. [2020-10-29 13:52:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 4117 transitions. [2020-10-29 13:52:40,644 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 4117 transitions. Word has length 87 [2020-10-29 13:52:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:40,644 INFO L481 AbstractCegarLoop]: Abstraction has 2617 states and 4117 transitions. [2020-10-29 13:52:40,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:52:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 4117 transitions. [2020-10-29 13:52:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:52:40,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:40,654 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 13:52:40,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:52:40,655 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:40,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1762008542, now seen corresponding path program 1 times [2020-10-29 13:52:40,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:40,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30297595] [2020-10-29 13:52:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:45,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:45,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:52:45,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:52:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 13:52:45,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:45,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 13:52:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 13:52:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:46,216 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:52:46,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:46,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:46,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:46,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:46,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 13:52:46,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:46,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:52:46,330 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 13:52:46,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30297595] [2020-10-29 13:52:46,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:46,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:52:46,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976874905] [2020-10-29 13:52:46,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:52:46,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:46,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:52:46,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:52:46,335 INFO L87 Difference]: Start difference. First operand 2617 states and 4117 transitions. Second operand 4 states. [2020-10-29 13:52:46,679 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:52:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:48,514 INFO L93 Difference]: Finished difference Result 6143 states and 9609 transitions. [2020-10-29 13:52:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:48,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-29 13:52:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:48,541 INFO L225 Difference]: With dead ends: 6143 [2020-10-29 13:52:48,541 INFO L226 Difference]: Without dead ends: 4764 [2020-10-29 13:52:48,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2020-10-29 13:52:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4409. [2020-10-29 13:52:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4409 states. [2020-10-29 13:52:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 6861 transitions. [2020-10-29 13:52:48,812 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 6861 transitions. Word has length 88 [2020-10-29 13:52:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:48,813 INFO L481 AbstractCegarLoop]: Abstraction has 4409 states and 6861 transitions. [2020-10-29 13:52:48,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:52:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 6861 transitions. [2020-10-29 13:52:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 13:52:48,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:48,826 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 13:52:48,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:52:48,827 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:48,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2108207754, now seen corresponding path program 1 times [2020-10-29 13:52:48,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:48,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261624185] [2020-10-29 13:52:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 13:52:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:52:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-10-29 13:52:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:50,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:52:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 13:52:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:52:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:51,121 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:52:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:51,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:51,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:51,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:51,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:52:51,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:51,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:51,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:51,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:51,165 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 13:52:51,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261624185] [2020-10-29 13:52:51,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:51,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:52:51,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576988209] [2020-10-29 13:52:51,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:52:51,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:51,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:52:51,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:51,168 INFO L87 Difference]: Start difference. First operand 4409 states and 6861 transitions. Second operand 5 states. [2020-10-29 13:52:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:53,000 INFO L93 Difference]: Finished difference Result 8092 states and 12527 transitions. [2020-10-29 13:52:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:53,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-29 13:52:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:53,026 INFO L225 Difference]: With dead ends: 8092 [2020-10-29 13:52:53,027 INFO L226 Difference]: Without dead ends: 4409 [2020-10-29 13:52:53,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:52:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2020-10-29 13:52:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2020-10-29 13:52:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4409 states. [2020-10-29 13:52:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 6797 transitions. [2020-10-29 13:52:53,327 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 6797 transitions. Word has length 89 [2020-10-29 13:52:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:53,327 INFO L481 AbstractCegarLoop]: Abstraction has 4409 states and 6797 transitions. [2020-10-29 13:52:53,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:52:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 6797 transitions. [2020-10-29 13:52:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 13:52:53,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:53,341 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 13:52:53,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:52:53,341 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash 531095659, now seen corresponding path program 1 times [2020-10-29 13:52:53,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:53,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156540860] [2020-10-29 13:52:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:53,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:54,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:54,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 13:52:54,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:52:54,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-10-29 13:52:54,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:54,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 13:52:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:52:54,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:54,657 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:52:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:54,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:54,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:52:54,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:54,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:54,720 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 13:52:54,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156540860] [2020-10-29 13:52:54,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:54,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:52:54,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048688917] [2020-10-29 13:52:54,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:52:54,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:54,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:52:54,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:52:54,727 INFO L87 Difference]: Start difference. First operand 4409 states and 6797 transitions. Second operand 4 states. [2020-10-29 13:52:55,116 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:52:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:56,924 INFO L93 Difference]: Finished difference Result 9198 states and 14106 transitions. [2020-10-29 13:52:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:56,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-29 13:52:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:56,966 INFO L225 Difference]: With dead ends: 9198 [2020-10-29 13:52:56,967 INFO L226 Difference]: Without dead ends: 7307 [2020-10-29 13:52:56,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7307 states. [2020-10-29 13:52:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7307 to 7304. [2020-10-29 13:52:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7304 states. [2020-10-29 13:52:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 11142 transitions. [2020-10-29 13:52:57,561 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 11142 transitions. Word has length 90 [2020-10-29 13:52:57,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:57,562 INFO L481 AbstractCegarLoop]: Abstraction has 7304 states and 11142 transitions. [2020-10-29 13:52:57,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:52:57,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 11142 transitions. [2020-10-29 13:52:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 13:52:57,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:57,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:52:57,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:52:57,586 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:57,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:57,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1998267168, now seen corresponding path program 1 times [2020-10-29 13:52:57,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:57,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694519096] [2020-10-29 13:52:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:57,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:57,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:58,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:58,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 13:52:58,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:52:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-29 13:52:58,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:58,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:52:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:52:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:52:58,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:58,476 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:52:58,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:58,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:58,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:58,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:58,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:52:58,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:58,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:58,515 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 13:52:58,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694519096] [2020-10-29 13:52:58,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:58,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:52:58,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179654062] [2020-10-29 13:52:58,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:52:58,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:58,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:52:58,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:58,517 INFO L87 Difference]: Start difference. First operand 7304 states and 11142 transitions. Second operand 5 states. [2020-10-29 13:53:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:00,400 INFO L93 Difference]: Finished difference Result 14570 states and 22214 transitions. [2020-10-29 13:53:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:53:00,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-29 13:53:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:00,437 INFO L225 Difference]: With dead ends: 14570 [2020-10-29 13:53:00,437 INFO L226 Difference]: Without dead ends: 7304 [2020-10-29 13:53:00,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:53:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7304 states. [2020-10-29 13:53:00,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7304 to 7304. [2020-10-29 13:53:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7304 states. [2020-10-29 13:53:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 11110 transitions. [2020-10-29 13:53:00,869 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 11110 transitions. Word has length 92 [2020-10-29 13:53:00,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:00,869 INFO L481 AbstractCegarLoop]: Abstraction has 7304 states and 11110 transitions. [2020-10-29 13:53:00,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:53:00,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 11110 transitions. [2020-10-29 13:53:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 13:53:00,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:00,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:00,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:53:00,891 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:00,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:00,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1666864879, now seen corresponding path program 1 times [2020-10-29 13:53:00,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:00,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189011822] [2020-10-29 13:53:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:00,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:53:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:06,355 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:53:06,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:06,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:06,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:06,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:06,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 13:53:06,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:06,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:06,542 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 13:53:06,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189011822] [2020-10-29 13:53:06,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:06,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:53:06,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958513309] [2020-10-29 13:53:06,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:53:06,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:06,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:53:06,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:53:06,545 INFO L87 Difference]: Start difference. First operand 7304 states and 11110 transitions. Second operand 8 states. [2020-10-29 13:53:12,122 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:53:12,546 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:53:12,919 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:53:13,317 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:53:13,700 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:53:13,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:13,742 INFO L93 Difference]: Finished difference Result 36491 states and 54798 transitions. [2020-10-29 13:53:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:53:13,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-29 13:53:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:13,809 INFO L225 Difference]: With dead ends: 36491 [2020-10-29 13:53:13,810 INFO L226 Difference]: Without dead ends: 29673 [2020-10-29 13:53:13,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:53:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29673 states. [2020-10-29 13:53:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29673 to 29661. [2020-10-29 13:53:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29661 states. [2020-10-29 13:53:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29661 states to 29661 states and 44301 transitions. [2020-10-29 13:53:15,650 INFO L78 Accepts]: Start accepts. Automaton has 29661 states and 44301 transitions. Word has length 123 [2020-10-29 13:53:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:15,650 INFO L481 AbstractCegarLoop]: Abstraction has 29661 states and 44301 transitions. [2020-10-29 13:53:15,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:53:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 29661 states and 44301 transitions. [2020-10-29 13:53:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 13:53:15,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:15,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:15,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:53:15,732 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:15,732 INFO L82 PathProgramCache]: Analyzing trace with hash 822961365, now seen corresponding path program 1 times [2020-10-29 13:53:15,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:15,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646333727] [2020-10-29 13:53:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:15,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:20,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:20,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 13:53:20,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:53:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:53:20,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:20,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:53:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:53:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:53:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:21,177 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:53:21,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:21,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:21,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:21,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:53:21,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:21,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:21,296 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 13:53:21,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646333727] [2020-10-29 13:53:21,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:21,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:53:21,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094851631] [2020-10-29 13:53:21,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:53:21,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:21,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:53:21,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:53:21,298 INFO L87 Difference]: Start difference. First operand 29661 states and 44301 transitions. Second operand 8 states. [2020-10-29 13:53:28,537 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:53:28,927 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:53:29,295 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:53:29,674 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:53:30,022 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:53:30,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:30,126 INFO L93 Difference]: Finished difference Result 67068 states and 99593 transitions. [2020-10-29 13:53:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:53:30,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-29 13:53:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:30,255 INFO L225 Difference]: With dead ends: 67068 [2020-10-29 13:53:30,255 INFO L226 Difference]: Without dead ends: 59895 [2020-10-29 13:53:30,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:53:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59895 states. [2020-10-29 13:53:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59895 to 48454. [2020-10-29 13:53:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48454 states. [2020-10-29 13:53:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48454 states to 48454 states and 72050 transitions. [2020-10-29 13:53:33,934 INFO L78 Accepts]: Start accepts. Automaton has 48454 states and 72050 transitions. Word has length 124 [2020-10-29 13:53:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:33,935 INFO L481 AbstractCegarLoop]: Abstraction has 48454 states and 72050 transitions. [2020-10-29 13:53:33,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:53:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 48454 states and 72050 transitions. [2020-10-29 13:53:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 13:53:34,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:34,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:34,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:53:34,253 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:34,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1793152326, now seen corresponding path program 1 times [2020-10-29 13:53:34,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:34,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484692214] [2020-10-29 13:53:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:34,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:34,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:39,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:39,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 13:53:39,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:53:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:53:39,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:39,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:53:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:53:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:53:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:39,684 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:53:39,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:39,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:39,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:39,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:53:39,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:39,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:39,790 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 13:53:39,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484692214] [2020-10-29 13:53:39,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:39,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:53:39,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139309066] [2020-10-29 13:53:39,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:53:39,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:39,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:53:39,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:53:39,792 INFO L87 Difference]: Start difference. First operand 48454 states and 72050 transitions. Second operand 8 states. [2020-10-29 13:53:49,394 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:53:49,762 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:53:50,165 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:53:50,525 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:53:50,993 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:53:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:51,233 INFO L93 Difference]: Finished difference Result 98292 states and 145930 transitions. [2020-10-29 13:53:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:53:51,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-29 13:53:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:51,344 INFO L225 Difference]: With dead ends: 98292 [2020-10-29 13:53:51,345 INFO L226 Difference]: Without dead ends: 81742 [2020-10-29 13:53:51,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:53:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81742 states. [2020-10-29 13:53:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81742 to 59116. [2020-10-29 13:53:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59116 states. [2020-10-29 13:53:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59116 states to 59116 states and 87750 transitions. [2020-10-29 13:53:56,050 INFO L78 Accepts]: Start accepts. Automaton has 59116 states and 87750 transitions. Word has length 124 [2020-10-29 13:53:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:56,050 INFO L481 AbstractCegarLoop]: Abstraction has 59116 states and 87750 transitions. [2020-10-29 13:53:56,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:53:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 59116 states and 87750 transitions. [2020-10-29 13:53:56,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 13:53:56,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:56,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:56,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:53:56,136 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:56,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1649333071, now seen corresponding path program 1 times [2020-10-29 13:53:56,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:56,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950228915] [2020-10-29 13:53:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:57,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:01,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:01,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 13:54:01,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:54:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:54:01,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:01,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:54:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:54:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:54:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:01,567 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:54:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:01,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:01,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:01,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:54:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:01,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:01,641 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 13:54:01,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950228915] [2020-10-29 13:54:01,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:01,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:54:01,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158945883] [2020-10-29 13:54:01,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:54:01,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:54:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:54:01,643 INFO L87 Difference]: Start difference. First operand 59116 states and 87750 transitions. Second operand 8 states. [2020-10-29 13:54:12,097 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:54:12,455 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:54:12,867 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:54:13,246 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:54:13,712 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:54:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:14,033 INFO L93 Difference]: Finished difference Result 116070 states and 172332 transitions. [2020-10-29 13:54:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:54:14,034 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-29 13:54:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:14,159 INFO L225 Difference]: With dead ends: 116070 [2020-10-29 13:54:14,159 INFO L226 Difference]: Without dead ends: 93810 [2020-10-29 13:54:14,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:54:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93810 states. [2020-10-29 13:54:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93810 to 65785. [2020-10-29 13:54:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65785 states. [2020-10-29 13:54:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65785 states to 65785 states and 97586 transitions. [2020-10-29 13:54:19,440 INFO L78 Accepts]: Start accepts. Automaton has 65785 states and 97586 transitions. Word has length 124 [2020-10-29 13:54:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:19,440 INFO L481 AbstractCegarLoop]: Abstraction has 65785 states and 97586 transitions. [2020-10-29 13:54:19,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:54:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 65785 states and 97586 transitions. [2020-10-29 13:54:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 13:54:19,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:19,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:19,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:54:19,513 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1411675512, now seen corresponding path program 1 times [2020-10-29 13:54:19,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:19,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697270198] [2020-10-29 13:54:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:19,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:20,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:21,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:23,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:24,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:24,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 13:54:24,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:54:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:54:24,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:24,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:54:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:54:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 13:54:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:24,961 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:54:24,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:24,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:24,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:24,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:54:24,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:24,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:25,042 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 13:54:25,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697270198] [2020-10-29 13:54:25,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:25,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:54:25,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877249456] [2020-10-29 13:54:25,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:54:25,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:25,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:54:25,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:54:25,044 INFO L87 Difference]: Start difference. First operand 65785 states and 97586 transitions. Second operand 8 states. [2020-10-29 13:54:35,488 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:54:36,011 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:54:36,372 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:54:36,756 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:54:37,119 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:54:37,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:37,453 INFO L93 Difference]: Finished difference Result 116755 states and 173082 transitions. [2020-10-29 13:54:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:54:37,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-29 13:54:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:37,570 INFO L225 Difference]: With dead ends: 116755 [2020-10-29 13:54:37,571 INFO L226 Difference]: Without dead ends: 93876 [2020-10-29 13:54:37,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:54:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93876 states. [2020-10-29 13:54:44,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93876 to 88486. [2020-10-29 13:54:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88486 states. [2020-10-29 13:54:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88486 states to 88486 states and 130282 transitions. [2020-10-29 13:54:44,811 INFO L78 Accepts]: Start accepts. Automaton has 88486 states and 130282 transitions. Word has length 125 [2020-10-29 13:54:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:44,812 INFO L481 AbstractCegarLoop]: Abstraction has 88486 states and 130282 transitions. [2020-10-29 13:54:44,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:54:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 88486 states and 130282 transitions. [2020-10-29 13:54:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 13:54:44,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:44,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:44,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:54:44,909 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash 126483343, now seen corresponding path program 1 times [2020-10-29 13:54:44,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:44,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880059172] [2020-10-29 13:54:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:45,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:45,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:48,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:50,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:50,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 13:54:50,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:54:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:54:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:50,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:54:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:54:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 13:54:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:50,631 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:54:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:50,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:50,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:50,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:54:50,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:50,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:50,715 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 13:54:50,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880059172] [2020-10-29 13:54:50,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:50,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:54:50,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796889961] [2020-10-29 13:54:50,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:54:50,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:50,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:54:50,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:54:50,717 INFO L87 Difference]: Start difference. First operand 88486 states and 130282 transitions. Second operand 8 states. [2020-10-29 13:55:04,936 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:55:05,323 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:55:05,684 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:55:06,071 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:55:06,429 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:55:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:07,351 INFO L93 Difference]: Finished difference Result 142084 states and 209118 transitions. [2020-10-29 13:55:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:55:07,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-29 13:55:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:07,511 INFO L225 Difference]: With dead ends: 142084 [2020-10-29 13:55:07,511 INFO L226 Difference]: Without dead ends: 119067 [2020-10-29 13:55:07,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:55:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119067 states. [2020-10-29 13:55:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119067 to 108290. [2020-10-29 13:55:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108290 states. [2020-10-29 13:55:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108290 states to 108290 states and 158326 transitions. [2020-10-29 13:55:17,486 INFO L78 Accepts]: Start accepts. Automaton has 108290 states and 158326 transitions. Word has length 125 [2020-10-29 13:55:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:17,486 INFO L481 AbstractCegarLoop]: Abstraction has 108290 states and 158326 transitions. [2020-10-29 13:55:17,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:55:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 108290 states and 158326 transitions. [2020-10-29 13:55:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 13:55:17,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:17,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:17,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:55:17,626 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1684620968, now seen corresponding path program 1 times [2020-10-29 13:55:17,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:17,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941827918] [2020-10-29 13:55:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:22,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:22,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 13:55:22,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:55:22,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:55:22,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:22,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:55:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:55:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 13:55:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:23,026 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:55:23,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:23,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:23,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:23,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:55:23,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:23,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:55:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:23,072 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 13:55:23,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941827918] [2020-10-29 13:55:23,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:23,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:55:23,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54334564] [2020-10-29 13:55:23,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:55:23,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:23,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:55:23,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:55:23,074 INFO L87 Difference]: Start difference. First operand 108290 states and 158326 transitions. Second operand 6 states. [2020-10-29 13:55:23,465 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 192