/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.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:29:32,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:29:32,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:29:32,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:29:32,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:29:32,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:29:32,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:29:32,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:29:32,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:29:32,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:29:32,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:29:32,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:29:32,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:29:33,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:29:33,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:29:33,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:29:33,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:29:33,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:29:33,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:29:33,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:29:33,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:29:33,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:29:33,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:29:33,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:29:33,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:29:33,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:29:33,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:29:33,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:29:33,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:29:33,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:29:33,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:29:33,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:29:33,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:29:33,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:29:33,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:29:33,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:29:33,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:29:33,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:29:33,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:29:33,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:29:33,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:29:33,042 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 13:29:33,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:29:33,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:29:33,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:29:33,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:29:33,069 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:29:33,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:29:33,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:29:33,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:29:33,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:29:33,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:29:33,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:29:33,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:29:33,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:29:33,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:29:33,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:29:33,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:29:33,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:29:33,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:29:33,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:29:33,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:29:33,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:29:33,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:29:33,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:29:33,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:29:33,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:29:33,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:29:33,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:29:33,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:29:33,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:29:33,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:29:33,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:29:33,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:29:33,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:29:33,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:29:33,477 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:29:33,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-29 13:29:33,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3d55c863/8d8b43a24ea940248194d96a77730367/FLAG1d5b6a85d [2020-10-29 13:29:34,508 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:29:34,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-29 13:29:34,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3d55c863/8d8b43a24ea940248194d96a77730367/FLAG1d5b6a85d [2020-10-29 13:29:34,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3d55c863/8d8b43a24ea940248194d96a77730367 [2020-10-29 13:29:34,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:29:34,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:29:34,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:29:34,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:29:34,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:29:34,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:29:34" (1/1) ... [2020-10-29 13:29:34,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36988f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:34, skipping insertion in model container [2020-10-29 13:29:34,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:29:34" (1/1) ... [2020-10-29 13:29:34,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:29:35,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:29:37,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:29:37,111 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:29:37,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:29:38,023 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:29:38,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38 WrapperNode [2020-10-29 13:29:38,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:29:38,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:29:38,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:29:38,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:29:38,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (1/1) ... [2020-10-29 13:29:38,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (1/1) ... [2020-10-29 13:29:38,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (1/1) ... [2020-10-29 13:29:38,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (1/1) ... [2020-10-29 13:29:38,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (1/1) ... [2020-10-29 13:29:38,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (1/1) ... [2020-10-29 13:29:38,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (1/1) ... [2020-10-29 13:29:38,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:29:38,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:29:38,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:29:38,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:29:38,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:29:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:29:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:29:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:29:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:29:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:29:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:29:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:29:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:29:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:29:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:29:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:29:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:29:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:29:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:29:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:29:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:29:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:29:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:29:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:29:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:29:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:29:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:29:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:29:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:29:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:29:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:29:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:29:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:29:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:29:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:29:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:29:45,915 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:29:45,915 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:29:45,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:29:45 BoogieIcfgContainer [2020-10-29 13:29:45,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:29:45,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:29:45,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:29:45,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:29:45,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:29:34" (1/3) ... [2020-10-29 13:29:45,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f45901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:29:45, skipping insertion in model container [2020-10-29 13:29:45,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:38" (2/3) ... [2020-10-29 13:29:45,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f45901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:29:45, skipping insertion in model container [2020-10-29 13:29:45,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:29:45" (3/3) ... [2020-10-29 13:29:45,935 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-29 13:29:45,947 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:29:45,958 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:29:45,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:29:46,026 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:29:46,026 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:29:46,026 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:29:46,027 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:29:46,027 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:29:46,027 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:29:46,027 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:29:46,027 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:29:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states. [2020-10-29 13:29:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 13:29:46,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:46,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:46,149 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:46,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1412789034, now seen corresponding path program 1 times [2020-10-29 13:29:46,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:46,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240865261] [2020-10-29 13:29:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:51,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 13:29:51,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:29:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:29:51,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:51,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:29:51,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:29:51,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:29:54,000 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:29:54,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:54,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 13:29:54,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:54,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:29:54,222 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 13:29:54,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240865261] [2020-10-29 13:29:54,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:54,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:54,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421374918] [2020-10-29 13:29:54,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:54,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:54,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:54,269 INFO L87 Difference]: Start difference. First operand 2357 states. Second operand 6 states. [2020-10-29 13:29:56,021 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-29 13:30:16,346 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 503 [2020-10-29 13:30:17,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:17,227 INFO L93 Difference]: Finished difference Result 3841 states and 6805 transitions. [2020-10-29 13:30:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:30:17,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-29 13:30:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:17,265 INFO L225 Difference]: With dead ends: 3841 [2020-10-29 13:30:17,266 INFO L226 Difference]: Without dead ends: 2636 [2020-10-29 13:30:17,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:17,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2020-10-29 13:30:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2486. [2020-10-29 13:30:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2020-10-29 13:30:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3372 transitions. [2020-10-29 13:30:17,466 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3372 transitions. Word has length 91 [2020-10-29 13:30:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:17,466 INFO L481 AbstractCegarLoop]: Abstraction has 2486 states and 3372 transitions. [2020-10-29 13:30:17,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:17,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3372 transitions. [2020-10-29 13:30:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 13:30:17,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:17,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:17,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:30:17,477 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:17,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:17,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1569254492, now seen corresponding path program 1 times [2020-10-29 13:30:17,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:17,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47608512] [2020-10-29 13:30:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:19,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:19,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:22,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:22,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 13:30:22,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:30:22,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 13:30:22,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:22,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:30:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:30:24,474 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:30:24,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:24,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:24,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:24,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 13:30:24,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:24,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:30:24,679 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 13:30:24,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47608512] [2020-10-29 13:30:24,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:24,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:24,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485558591] [2020-10-29 13:30:24,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:24,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:24,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:24,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:24,696 INFO L87 Difference]: Start difference. First operand 2486 states and 3372 transitions. Second operand 6 states. [2020-10-29 13:30:26,458 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:30:36,910 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-29 13:30:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:37,834 INFO L93 Difference]: Finished difference Result 3502 states and 4777 transitions. [2020-10-29 13:30:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:30:37,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-29 13:30:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:37,847 INFO L225 Difference]: With dead ends: 3502 [2020-10-29 13:30:37,847 INFO L226 Difference]: Without dead ends: 2273 [2020-10-29 13:30:37,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:30:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-10-29 13:30:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2177. [2020-10-29 13:30:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2177 states. [2020-10-29 13:30:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3034 transitions. [2020-10-29 13:30:37,956 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3034 transitions. Word has length 91 [2020-10-29 13:30:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:37,956 INFO L481 AbstractCegarLoop]: Abstraction has 2177 states and 3034 transitions. [2020-10-29 13:30:37,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3034 transitions. [2020-10-29 13:30:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 13:30:37,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:37,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:37,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:30:37,963 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1582779876, now seen corresponding path program 1 times [2020-10-29 13:30:37,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:37,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587813567] [2020-10-29 13:30:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:38,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:41,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:43,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:43,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 13:30:43,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:30:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 13:30:43,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:43,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:30:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:44,859 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:30:44,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:44,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:44,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:44,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 13:30:44,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:44,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:44,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:44,988 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 13:30:44,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587813567] [2020-10-29 13:30:44,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:44,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:44,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027603264] [2020-10-29 13:30:44,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:44,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:44,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:44,991 INFO L87 Difference]: Start difference. First operand 2177 states and 3034 transitions. Second operand 6 states. [2020-10-29 13:30:46,685 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:30:55,429 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-29 13:30:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:56,319 INFO L93 Difference]: Finished difference Result 4199 states and 5938 transitions. [2020-10-29 13:30:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:30:56,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-29 13:30:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:56,339 INFO L225 Difference]: With dead ends: 4199 [2020-10-29 13:30:56,339 INFO L226 Difference]: Without dead ends: 3028 [2020-10-29 13:30:56,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:30:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2020-10-29 13:30:56,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 2968. [2020-10-29 13:30:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2968 states. [2020-10-29 13:30:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 4238 transitions. [2020-10-29 13:30:56,487 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 4238 transitions. Word has length 91 [2020-10-29 13:30:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:56,489 INFO L481 AbstractCegarLoop]: Abstraction has 2968 states and 4238 transitions. [2020-10-29 13:30:56,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:56,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 4238 transitions. [2020-10-29 13:30:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 13:30:56,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:56,496 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 13:30:56,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:30:56,496 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash -652581548, now seen corresponding path program 1 times [2020-10-29 13:30:56,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:56,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099432199] [2020-10-29 13:30:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:01,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:01,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 13:31:01,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:31:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:31:01,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:01,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:31:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:31:01,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:31:01,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:31:03,498 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:31:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:03,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:03,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:03,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 13:31:03,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:03,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:31:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:31:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:03,610 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 13:31:03,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099432199] [2020-10-29 13:31:03,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:03,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:31:03,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139303308] [2020-10-29 13:31:03,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:31:03,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:03,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:31:03,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:31:03,613 INFO L87 Difference]: Start difference. First operand 2968 states and 4238 transitions. Second operand 6 states. [2020-10-29 13:31:05,467 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-29 13:31:13,917 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 503 [2020-10-29 13:31:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:14,731 INFO L93 Difference]: Finished difference Result 5643 states and 8157 transitions. [2020-10-29 13:31:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:31:14,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-29 13:31:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:14,753 INFO L225 Difference]: With dead ends: 5643 [2020-10-29 13:31:14,753 INFO L226 Difference]: Without dead ends: 4201 [2020-10-29 13:31:14,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:31:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2020-10-29 13:31:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 4105. [2020-10-29 13:31:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4105 states. [2020-10-29 13:31:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 5977 transitions. [2020-10-29 13:31:14,965 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 5977 transitions. Word has length 92 [2020-10-29 13:31:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:14,965 INFO L481 AbstractCegarLoop]: Abstraction has 4105 states and 5977 transitions. [2020-10-29 13:31:14,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:31:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 5977 transitions. [2020-10-29 13:31:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 13:31:14,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:14,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:31:14,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:31:14,972 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:14,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1118278955, now seen corresponding path program 1 times [2020-10-29 13:31:14,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:14,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399376877] [2020-10-29 13:31:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:20,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:20,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 13:31:20,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:31:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:31:20,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:20,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:31:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:31:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 13:31:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:21,758 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:31:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:21,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:21,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:31:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:21,905 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 13:31:21,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399376877] [2020-10-29 13:31:21,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:21,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:31:21,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78634697] [2020-10-29 13:31:21,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:31:21,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:31:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:31:21,908 INFO L87 Difference]: Start difference. First operand 4105 states and 5977 transitions. Second operand 6 states. [2020-10-29 13:31:23,725 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-29 13:31:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:30,526 INFO L93 Difference]: Finished difference Result 6212 states and 9117 transitions. [2020-10-29 13:31:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:31:30,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-29 13:31:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:30,545 INFO L225 Difference]: With dead ends: 6212 [2020-10-29 13:31:30,545 INFO L226 Difference]: Without dead ends: 4089 [2020-10-29 13:31:30,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:31:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2020-10-29 13:31:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4089. [2020-10-29 13:31:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4089 states. [2020-10-29 13:31:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5943 transitions. [2020-10-29 13:31:30,772 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5943 transitions. Word has length 93 [2020-10-29 13:31:30,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:30,772 INFO L481 AbstractCegarLoop]: Abstraction has 4089 states and 5943 transitions. [2020-10-29 13:31:30,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:31:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5943 transitions. [2020-10-29 13:31:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 13:31:30,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:30,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:31:30,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:31:30,780 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:30,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash 572361619, now seen corresponding path program 1 times [2020-10-29 13:31:30,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:30,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095352412] [2020-10-29 13:31:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:31,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:32,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:33,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:35,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 13:31:35,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:31:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:31:35,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:35,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:31:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:31:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:31:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:37,656 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:31:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:37,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:37,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:37,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 13:31:37,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:37,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:31:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:31:37,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:37,802 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 13:31:37,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095352412] [2020-10-29 13:31:37,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:37,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:31:37,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734389743] [2020-10-29 13:31:37,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:31:37,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:37,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:31:37,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:31:37,804 INFO L87 Difference]: Start difference. First operand 4089 states and 5943 transitions. Second operand 6 states. [2020-10-29 13:31:39,639 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-29 13:31:45,528 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 503 [2020-10-29 13:31:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:46,276 INFO L93 Difference]: Finished difference Result 7405 states and 10751 transitions. [2020-10-29 13:31:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:31:46,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-29 13:31:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:46,299 INFO L225 Difference]: With dead ends: 7405 [2020-10-29 13:31:46,299 INFO L226 Difference]: Without dead ends: 5050 [2020-10-29 13:31:46,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:31:46,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2020-10-29 13:31:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 4984. [2020-10-29 13:31:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-10-29 13:31:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7326 transitions. [2020-10-29 13:31:46,592 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7326 transitions. Word has length 94 [2020-10-29 13:31:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:46,593 INFO L481 AbstractCegarLoop]: Abstraction has 4984 states and 7326 transitions. [2020-10-29 13:31:46,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:31:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7326 transitions. [2020-10-29 13:31:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:31:46,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:46,599 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] [2020-10-29 13:31:46,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:31:46,599 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:46,600 INFO L82 PathProgramCache]: Analyzing trace with hash 145231462, now seen corresponding path program 1 times [2020-10-29 13:31:46,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:46,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433868940] [2020-10-29 13:31:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:46,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:47,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:49,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:50,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 13:31:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:53,588 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:31:53,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:53,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:53,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:53,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:31:53,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:53,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:53,687 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 13:31:53,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433868940] [2020-10-29 13:31:53,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:53,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:31:53,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277210370] [2020-10-29 13:31:53,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:31:53,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:31:53,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:31:53,690 INFO L87 Difference]: Start difference. First operand 4984 states and 7326 transitions. Second operand 7 states. [2020-10-29 13:31:55,464 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-29 13:32:00,964 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:32:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:02,807 INFO L93 Difference]: Finished difference Result 10964 states and 16098 transitions. [2020-10-29 13:32:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:32:02,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 13:32:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:02,863 INFO L225 Difference]: With dead ends: 10964 [2020-10-29 13:32:02,863 INFO L226 Difference]: Without dead ends: 7819 [2020-10-29 13:32:02,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:32:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7819 states. [2020-10-29 13:32:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7819 to 4984. [2020-10-29 13:32:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-10-29 13:32:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7325 transitions. [2020-10-29 13:32:03,282 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7325 transitions. Word has length 95 [2020-10-29 13:32:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:03,282 INFO L481 AbstractCegarLoop]: Abstraction has 4984 states and 7325 transitions. [2020-10-29 13:32:03,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:32:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7325 transitions. [2020-10-29 13:32:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:32:03,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:03,288 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] [2020-10-29 13:32:03,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:32:03,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:03,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1120777496, now seen corresponding path program 1 times [2020-10-29 13:32:03,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:03,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343477783] [2020-10-29 13:32:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:03,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 13:32:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:10,041 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:32:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:10,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:10,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:10,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:32:10,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:10,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:10,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343477783] [2020-10-29 13:32:10,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:10,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:32:10,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466768020] [2020-10-29 13:32:10,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:32:10,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:10,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:32:10,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:32:10,105 INFO L87 Difference]: Start difference. First operand 4984 states and 7325 transitions. Second operand 8 states. [2020-10-29 13:32:11,878 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:32:18,216 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:32:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:20,653 INFO L93 Difference]: Finished difference Result 11864 states and 17782 transitions. [2020-10-29 13:32:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:32:20,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 13:32:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:20,671 INFO L225 Difference]: With dead ends: 11864 [2020-10-29 13:32:20,671 INFO L226 Difference]: Without dead ends: 9580 [2020-10-29 13:32:20,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:32:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9580 states. [2020-10-29 13:32:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9580 to 4984. [2020-10-29 13:32:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-10-29 13:32:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7323 transitions. [2020-10-29 13:32:21,107 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7323 transitions. Word has length 95 [2020-10-29 13:32:21,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:21,107 INFO L481 AbstractCegarLoop]: Abstraction has 4984 states and 7323 transitions. [2020-10-29 13:32:21,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:32:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7323 transitions. [2020-10-29 13:32:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:32:21,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:21,114 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] [2020-10-29 13:32:21,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:32:21,114 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1904370214, now seen corresponding path program 1 times [2020-10-29 13:32:21,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:21,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179364356] [2020-10-29 13:32:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:21,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:26,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:26,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:32:26,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:32:26,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:32:26,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:26,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:32:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 13:32:26,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:28,028 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:32:28,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:28,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:28,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:28,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:32:28,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:28,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:28,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:28,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:28,113 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 13:32:28,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179364356] [2020-10-29 13:32:28,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:28,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:32:28,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009119128] [2020-10-29 13:32:28,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:32:28,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:28,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:32:28,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:32:28,116 INFO L87 Difference]: Start difference. First operand 4984 states and 7323 transitions. Second operand 8 states. [2020-10-29 13:32:30,011 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:32:36,295 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:32:39,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:39,166 INFO L93 Difference]: Finished difference Result 11848 states and 17756 transitions. [2020-10-29 13:32:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:32:39,167 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 13:32:39,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:39,188 INFO L225 Difference]: With dead ends: 11848 [2020-10-29 13:32:39,188 INFO L226 Difference]: Without dead ends: 9580 [2020-10-29 13:32:39,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:32:39,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9580 states. [2020-10-29 13:32:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9580 to 4984. [2020-10-29 13:32:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-10-29 13:32:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7319 transitions. [2020-10-29 13:32:39,687 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7319 transitions. Word has length 95 [2020-10-29 13:32:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:39,688 INFO L481 AbstractCegarLoop]: Abstraction has 4984 states and 7319 transitions. [2020-10-29 13:32:39,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:32:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7319 transitions. [2020-10-29 13:32:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:32:39,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:39,692 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] [2020-10-29 13:32:39,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:32:39,693 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:39,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2090910693, now seen corresponding path program 1 times [2020-10-29 13:32:39,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:39,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235106481] [2020-10-29 13:32:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:39,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:41,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:42,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:42,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:32:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:46,587 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:32:46,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:46,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:46,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:46,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:32:46,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:46,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:46,661 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 13:32:46,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235106481] [2020-10-29 13:32:46,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:46,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:32:46,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477653304] [2020-10-29 13:32:46,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:32:46,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:46,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:32:46,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:32:46,663 INFO L87 Difference]: Start difference. First operand 4984 states and 7319 transitions. Second operand 8 states. [2020-10-29 13:32:48,531 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:32:56,878 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:32:59,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:59,086 INFO L93 Difference]: Finished difference Result 12126 states and 18152 transitions. [2020-10-29 13:32:59,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:32:59,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 13:32:59,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:59,110 INFO L225 Difference]: With dead ends: 12126 [2020-10-29 13:32:59,110 INFO L226 Difference]: Without dead ends: 9580 [2020-10-29 13:32:59,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:32:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9580 states. [2020-10-29 13:32:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9580 to 4984. [2020-10-29 13:32:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-10-29 13:32:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7318 transitions. [2020-10-29 13:32:59,577 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7318 transitions. Word has length 95 [2020-10-29 13:32:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:59,577 INFO L481 AbstractCegarLoop]: Abstraction has 4984 states and 7318 transitions. [2020-10-29 13:32:59,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:32:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7318 transitions. [2020-10-29 13:32:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:32:59,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:59,583 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] [2020-10-29 13:32:59,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:32:59,583 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:59,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1738129503, now seen corresponding path program 1 times [2020-10-29 13:32:59,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:59,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621620737] [2020-10-29 13:32:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:00,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:02,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:03,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:03,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:04,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:04,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:33:04,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:33:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:33:04,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:04,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:33:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:33:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 13:33:04,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:06,409 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:33:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:06,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:06,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:06,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:33:06,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:06,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:33:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:33:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:06,480 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 13:33:06,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621620737] [2020-10-29 13:33:06,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:06,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:33:06,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629414515] [2020-10-29 13:33:06,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:33:06,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:06,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:33:06,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:33:06,482 INFO L87 Difference]: Start difference. First operand 4984 states and 7318 transitions. Second operand 8 states. [2020-10-29 13:33:08,348 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 508