/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:17:01,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:17:01,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:17:01,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:17:01,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:17:01,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:17:01,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:17:01,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:17:01,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:17:01,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:17:01,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:17:01,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:17:01,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:17:01,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:17:01,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:17:01,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:17:01,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:17:01,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:17:02,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:17:02,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:17:02,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:17:02,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:17:02,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:17:02,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:17:02,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:17:02,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:17:02,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:17:02,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:17:02,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:17:02,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:17:02,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:17:02,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:17:02,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:17:02,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:17:02,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:17:02,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:17:02,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:17:02,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:17:02,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:17:02,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:17:02,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:17:02,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:17:02,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:17:02,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:17:02,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:17:02,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:17:02,080 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:17:02,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:17:02,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:17:02,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:17:02,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:17:02,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:17:02,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:17:02,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:17:02,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:17:02,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:17:02,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:17:02,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:17:02,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:17:02,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:17:02,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:17:02,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:17:02,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:17:02,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:17:02,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:17:02,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:17:02,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:17:02,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:17:02,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:17:02,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:17:02,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:17:02,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:17:02,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:17:02,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:17:02,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:17:02,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:17:02,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:17:02,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-28 12:17:02,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a66ba97/20ba15cd5da448cfb51632b3ae1d93f0/FLAGf1926a97a [2020-10-28 12:17:03,548 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:17:03,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-28 12:17:03,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a66ba97/20ba15cd5da448cfb51632b3ae1d93f0/FLAGf1926a97a [2020-10-28 12:17:04,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a66ba97/20ba15cd5da448cfb51632b3ae1d93f0 [2020-10-28 12:17:04,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:17:04,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:17:04,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:17:04,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:17:04,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:17:04,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:17:04" (1/1) ... [2020-10-28 12:17:04,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6f9025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:04, skipping insertion in model container [2020-10-28 12:17:04,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:17:04" (1/1) ... [2020-10-28 12:17:04,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:17:04,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:17:05,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:17:05,641 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:17:06,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:17:06,452 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:17:06,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06 WrapperNode [2020-10-28 12:17:06,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:17:06,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:17:06,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:17:06,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:17:06,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (1/1) ... [2020-10-28 12:17:06,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (1/1) ... [2020-10-28 12:17:06,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (1/1) ... [2020-10-28 12:17:06,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (1/1) ... [2020-10-28 12:17:06,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (1/1) ... [2020-10-28 12:17:06,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (1/1) ... [2020-10-28 12:17:06,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (1/1) ... [2020-10-28 12:17:06,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:17:06,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:17:06,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:17:06,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:17:06,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:17:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:17:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:17:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:17:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:17:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:17:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:17:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:17:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:17:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:17:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:17:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:17:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:17:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:17:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:17:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:17:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:17:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:17:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:17:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:17:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:17:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:17:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:17:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:17:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:17:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:17:11,734 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:17:11,735 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:17:11,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:11 BoogieIcfgContainer [2020-10-28 12:17:11,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:17:11,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:17:11,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:17:11,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:17:11,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:17:04" (1/3) ... [2020-10-28 12:17:11,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b677d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:11, skipping insertion in model container [2020-10-28 12:17:11,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:06" (2/3) ... [2020-10-28 12:17:11,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b677d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:11, skipping insertion in model container [2020-10-28 12:17:11,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:11" (3/3) ... [2020-10-28 12:17:11,753 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2020-10-28 12:17:11,766 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:17:11,773 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:17:11,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:17:11,834 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:17:11,834 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:17:11,834 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:17:11,834 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:17:11,835 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:17:11,835 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:17:11,835 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:17:11,835 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:17:11,878 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:17:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 12:17:11,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:11,889 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] [2020-10-28 12:17:11,889 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:11,896 INFO L82 PathProgramCache]: Analyzing trace with hash 174221132, now seen corresponding path program 1 times [2020-10-28 12:17:11,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:11,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809139445] [2020-10-28 12:17:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:12,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:12,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:12,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:17:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-28 12:17:12,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:12,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 12:17:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:17:12,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:12,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:12,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:12,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:12,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:17:12,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:12,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:13,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809139445] [2020-10-28 12:17:13,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:13,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:17:13,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482074701] [2020-10-28 12:17:13,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:17:13,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:13,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:17:13,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:17:13,056 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:17:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:23,743 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-28 12:17:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:17:23,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-28 12:17:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:23,783 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:17:23,783 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:17:23,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:17:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-28 12:17:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-28 12:17:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-28 12:17:23,967 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 60 [2020-10-28 12:17:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:23,968 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-28 12:17:23,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:17:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-28 12:17:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 12:17:23,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:23,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:23,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:17:23,977 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:23,978 INFO L82 PathProgramCache]: Analyzing trace with hash -816694262, now seen corresponding path program 1 times [2020-10-28 12:17:23,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:23,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578269122] [2020-10-28 12:17:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:24,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:25,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:25,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 12:17:25,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:17:25,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1658 [2020-10-28 12:17:25,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:25,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:25,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:25,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:17:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 12:17:25,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:25,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:25,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:25,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:25,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:17:25,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:25,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:17:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:25,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:25,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:17:25,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:17:25,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:25,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:17:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:26,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578269122] [2020-10-28 12:17:26,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:26,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:17:26,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020645215] [2020-10-28 12:17:26,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:17:26,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:26,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:17:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:26,075 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 5 states. [2020-10-28 12:17:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:37,499 INFO L93 Difference]: Finished difference Result 4675 states and 7283 transitions. [2020-10-28 12:17:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:17:37,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-28 12:17:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:37,524 INFO L225 Difference]: With dead ends: 4675 [2020-10-28 12:17:37,524 INFO L226 Difference]: Without dead ends: 3125 [2020-10-28 12:17:37,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:17:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-28 12:17:37,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3118. [2020-10-28 12:17:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3118 states. [2020-10-28 12:17:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4282 transitions. [2020-10-28 12:17:37,627 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4282 transitions. Word has length 135 [2020-10-28 12:17:37,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:37,628 INFO L481 AbstractCegarLoop]: Abstraction has 3118 states and 4282 transitions. [2020-10-28 12:17:37,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:17:37,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4282 transitions. [2020-10-28 12:17:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 12:17:37,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:37,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:37,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:17:37,633 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:37,633 INFO L82 PathProgramCache]: Analyzing trace with hash 426561854, now seen corresponding path program 1 times [2020-10-28 12:17:37,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:37,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808906748] [2020-10-28 12:17:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:38,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:38,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 12:17:38,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:17:38,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-28 12:17:38,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:38,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:17:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:17:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:38,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:38,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:38,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:17:38,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:38,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:38,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:38,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:38,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:17:38,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:38,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:17:38,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:38,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:17:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:39,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808906748] [2020-10-28 12:17:39,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:39,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:17:39,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586646524] [2020-10-28 12:17:39,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:39,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:39,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:39,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:39,094 INFO L87 Difference]: Start difference. First operand 3118 states and 4282 transitions. Second operand 7 states. [2020-10-28 12:17:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:54,038 INFO L93 Difference]: Finished difference Result 9454 states and 13244 transitions. [2020-10-28 12:17:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:17:54,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-28 12:17:54,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:54,086 INFO L225 Difference]: With dead ends: 9454 [2020-10-28 12:17:54,086 INFO L226 Difference]: Without dead ends: 6342 [2020-10-28 12:17:54,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:17:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2020-10-28 12:17:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 6292. [2020-10-28 12:17:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6292 states. [2020-10-28 12:17:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6292 states to 6292 states and 8124 transitions. [2020-10-28 12:17:54,303 INFO L78 Accepts]: Start accepts. Automaton has 6292 states and 8124 transitions. Word has length 141 [2020-10-28 12:17:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:54,307 INFO L481 AbstractCegarLoop]: Abstraction has 6292 states and 8124 transitions. [2020-10-28 12:17:54,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:17:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6292 states and 8124 transitions. [2020-10-28 12:17:54,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 12:17:54,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:54,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:54,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:17:54,317 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:54,319 INFO L82 PathProgramCache]: Analyzing trace with hash -468626250, now seen corresponding path program 1 times [2020-10-28 12:17:54,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:54,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709865826] [2020-10-28 12:17:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:55,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:55,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 12:17:55,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:17:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-28 12:17:55,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:55,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:55,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:17:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:55,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:55,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:55,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:17:55,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:55,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:55,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:55,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:55,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:55,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:17:55,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:55,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:17:55,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:55,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:17:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:55,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709865826] [2020-10-28 12:17:55,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:55,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:17:55,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772190846] [2020-10-28 12:17:55,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:55,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:55,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:55,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:55,926 INFO L87 Difference]: Start difference. First operand 6292 states and 8124 transitions. Second operand 7 states. [2020-10-28 12:18:10,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:10,545 INFO L93 Difference]: Finished difference Result 19159 states and 25338 transitions. [2020-10-28 12:18:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:18:10,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-28 12:18:10,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:10,614 INFO L225 Difference]: With dead ends: 19159 [2020-10-28 12:18:10,615 INFO L226 Difference]: Without dead ends: 12873 [2020-10-28 12:18:10,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:18:10,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12873 states. [2020-10-28 12:18:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12873 to 11275. [2020-10-28 12:18:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11275 states. [2020-10-28 12:18:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11275 states to 11275 states and 14296 transitions. [2020-10-28 12:18:10,977 INFO L78 Accepts]: Start accepts. Automaton has 11275 states and 14296 transitions. Word has length 145 [2020-10-28 12:18:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:10,978 INFO L481 AbstractCegarLoop]: Abstraction has 11275 states and 14296 transitions. [2020-10-28 12:18:10,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:18:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 11275 states and 14296 transitions. [2020-10-28 12:18:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-28 12:18:10,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:10,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:10,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:18:10,982 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:10,983 INFO L82 PathProgramCache]: Analyzing trace with hash 417009700, now seen corresponding path program 1 times [2020-10-28 12:18:10,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:10,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330962069] [2020-10-28 12:18:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:11,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:12,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:12,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 12:18:12,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:18:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1896 [2020-10-28 12:18:12,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:12,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:18:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:18:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:13,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:13,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:13,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:13,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:18:13,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:13,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:18:13,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:13,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:13,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:13,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:13,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:18:13,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-28 12:18:13,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:13,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:18:13,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:13,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330962069] [2020-10-28 12:18:13,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:18:13,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:18:13,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804686260] [2020-10-28 12:18:13,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:13,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:13,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:13,801 INFO L87 Difference]: Start difference. First operand 11275 states and 14296 transitions. Second operand 7 states. [2020-10-28 12:18:16,705 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:18:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:28,298 INFO L93 Difference]: Finished difference Result 27719 states and 34903 transitions. [2020-10-28 12:18:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:18:28,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-28 12:18:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:28,367 INFO L225 Difference]: With dead ends: 27719 [2020-10-28 12:18:28,368 INFO L226 Difference]: Without dead ends: 16450 [2020-10-28 12:18:28,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:18:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16450 states. [2020-10-28 12:18:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16450 to 16292. [2020-10-28 12:18:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16292 states. [2020-10-28 12:18:28,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16292 states to 16292 states and 20038 transitions. [2020-10-28 12:18:28,823 INFO L78 Accepts]: Start accepts. Automaton has 16292 states and 20038 transitions. Word has length 208 [2020-10-28 12:18:28,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:28,824 INFO L481 AbstractCegarLoop]: Abstraction has 16292 states and 20038 transitions. [2020-10-28 12:18:28,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:18:28,824 INFO L276 IsEmpty]: Start isEmpty. Operand 16292 states and 20038 transitions. [2020-10-28 12:18:28,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-28 12:18:28,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:28,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:28,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:18:28,831 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash 544855040, now seen corresponding path program 1 times [2020-10-28 12:18:28,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:28,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375805758] [2020-10-28 12:18:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:30,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:30,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 12:18:30,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-10-28 12:18:30,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:30,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:18:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:18:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:30,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:30,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:30,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:18:30,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:30,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:30,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:30,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:30,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:18:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:18:30,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:30,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:18:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:30,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:18:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:30,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:31,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:31,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:18:31,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:31,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 12:18:31,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:31,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:31,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:31,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:31,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:18:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:18:31,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375805758] [2020-10-28 12:18:31,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:31,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:18:31,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141853113] [2020-10-28 12:18:31,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:31,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:31,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:31,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:31,444 INFO L87 Difference]: Start difference. First operand 16292 states and 20038 transitions. Second operand 7 states. [2020-10-28 12:18:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:46,882 INFO L93 Difference]: Finished difference Result 39258 states and 50192 transitions. [2020-10-28 12:18:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:18:46,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-28 12:18:46,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:46,982 INFO L225 Difference]: With dead ends: 39258 [2020-10-28 12:18:46,983 INFO L226 Difference]: Without dead ends: 20532 [2020-10-28 12:18:47,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:18:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20532 states. [2020-10-28 12:18:47,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20532 to 20342. [2020-10-28 12:18:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20342 states. [2020-10-28 12:18:47,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20342 states to 20342 states and 24081 transitions. [2020-10-28 12:18:47,593 INFO L78 Accepts]: Start accepts. Automaton has 20342 states and 24081 transitions. Word has length 248 [2020-10-28 12:18:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:47,593 INFO L481 AbstractCegarLoop]: Abstraction has 20342 states and 24081 transitions. [2020-10-28 12:18:47,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:18:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 20342 states and 24081 transitions. [2020-10-28 12:18:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-28 12:18:47,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:47,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:47,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:18:47,600 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 646867708, now seen corresponding path program 1 times [2020-10-28 12:18:47,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:47,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304200987] [2020-10-28 12:18:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:49,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-28 12:18:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1862 [2020-10-28 12:18:49,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:49,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:18:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:18:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:49,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:49,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:49,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:49,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:18:49,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:49,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:49,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:49,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:18:49,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:18:49,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:49,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:18:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:18:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:50,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:50,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:18:50,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 12:18:50,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:50,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:18:50,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 102 proven. 8 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:18:50,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304200987] [2020-10-28 12:18:50,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:50,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:18:50,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981784117] [2020-10-28 12:18:50,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:50,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:50,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:50,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:50,401 INFO L87 Difference]: Start difference. First operand 20342 states and 24081 transitions. Second operand 7 states. [2020-10-28 12:19:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:16,716 INFO L93 Difference]: Finished difference Result 64400 states and 80999 transitions. [2020-10-28 12:19:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:19:16,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-28 12:19:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:16,851 INFO L225 Difference]: With dead ends: 64400 [2020-10-28 12:19:16,851 INFO L226 Difference]: Without dead ends: 42457 [2020-10-28 12:19:16,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:19:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42457 states. [2020-10-28 12:19:17,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42457 to 40869. [2020-10-28 12:19:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40869 states. [2020-10-28 12:19:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40869 states to 40869 states and 50564 transitions. [2020-10-28 12:19:17,733 INFO L78 Accepts]: Start accepts. Automaton has 40869 states and 50564 transitions. Word has length 294 [2020-10-28 12:19:17,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:17,734 INFO L481 AbstractCegarLoop]: Abstraction has 40869 states and 50564 transitions. [2020-10-28 12:19:17,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:17,734 INFO L276 IsEmpty]: Start isEmpty. Operand 40869 states and 50564 transitions. [2020-10-28 12:19:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-28 12:19:17,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:17,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:17,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:19:17,745 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:17,746 INFO L82 PathProgramCache]: Analyzing trace with hash 254294950, now seen corresponding path program 1 times [2020-10-28 12:19:17,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:17,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503373925] [2020-10-28 12:19:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:17,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:18,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:18,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-28 12:19:18,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:18,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-28 12:19:18,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:18,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-28 12:19:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 12:19:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:18,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:18,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:18,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:19:18,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:18,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:19,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:19,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:19:19,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:19:19,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:19,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:19:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:19,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:19,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:19:19,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:19,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:19:19,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:19,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:19:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-28 12:19:19,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503373925] [2020-10-28 12:19:19,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:19,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:19:19,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136107130] [2020-10-28 12:19:19,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:19:19,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:19,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:19:19,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:19:19,542 INFO L87 Difference]: Start difference. First operand 40869 states and 50564 transitions. Second operand 5 states. [2020-10-28 12:19:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:33,130 INFO L93 Difference]: Finished difference Result 100342 states and 128914 transitions. [2020-10-28 12:19:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:19:33,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2020-10-28 12:19:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:33,344 INFO L225 Difference]: With dead ends: 100342 [2020-10-28 12:19:33,345 INFO L226 Difference]: Without dead ends: 59479 [2020-10-28 12:19:33,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:19:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59479 states. [2020-10-28 12:19:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59479 to 59438. [2020-10-28 12:19:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59438 states. [2020-10-28 12:19:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59438 states to 59438 states and 72202 transitions. [2020-10-28 12:19:35,149 INFO L78 Accepts]: Start accepts. Automaton has 59438 states and 72202 transitions. Word has length 345 [2020-10-28 12:19:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:35,153 INFO L481 AbstractCegarLoop]: Abstraction has 59438 states and 72202 transitions. [2020-10-28 12:19:35,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:19:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 59438 states and 72202 transitions. [2020-10-28 12:19:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-28 12:19:35,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:35,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:35,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:19:35,164 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:35,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1719442282, now seen corresponding path program 1 times [2020-10-28 12:19:35,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:35,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666149783] [2020-10-28 12:19:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:35,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:37,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:37,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-28 12:19:37,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:37,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2517 [2020-10-28 12:19:37,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:37,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:19:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 12:19:37,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:37,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:37,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:37,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:37,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:19:37,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:37,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:38,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:38,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:19:38,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:38,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:19:38,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:38,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:38,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:19:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:38,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:19:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:38,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:38,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:19:38,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 12:19:38,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:38,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:19:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:19:39,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666149783] [2020-10-28 12:19:39,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:39,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:19:39,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248307712] [2020-10-28 12:19:39,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:19:39,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:39,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:19:39,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:19:39,071 INFO L87 Difference]: Start difference. First operand 59438 states and 72202 transitions. Second operand 7 states. [2020-10-28 12:19:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:58,558 INFO L93 Difference]: Finished difference Result 128874 states and 158907 transitions. [2020-10-28 12:19:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:19:58,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-28 12:19:58,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:58,813 INFO L225 Difference]: With dead ends: 128874 [2020-10-28 12:19:58,813 INFO L226 Difference]: Without dead ends: 69442 [2020-10-28 12:19:58,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:19:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69442 states. [2020-10-28 12:20:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69442 to 69364. [2020-10-28 12:20:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69364 states. [2020-10-28 12:20:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69364 states to 69364 states and 84457 transitions. [2020-10-28 12:20:00,485 INFO L78 Accepts]: Start accepts. Automaton has 69364 states and 84457 transitions. Word has length 353 [2020-10-28 12:20:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:00,486 INFO L481 AbstractCegarLoop]: Abstraction has 69364 states and 84457 transitions. [2020-10-28 12:20:00,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 69364 states and 84457 transitions. [2020-10-28 12:20:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 12:20:00,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:00,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:00,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:20:00,497 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:00,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1559493646, now seen corresponding path program 1 times [2020-10-28 12:20:00,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:00,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421233881] [2020-10-28 12:20:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:03,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:03,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 12:20:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:20:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2525 [2020-10-28 12:20:03,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:03,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:20:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 12:20:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:03,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:03,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:03,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:20:03,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:03,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:03,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:03,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:20:03,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:03,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:20:03,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:03,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:03,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:03,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:20:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:20:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:04,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:04,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:20:04,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 12:20:04,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:04,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:20:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:20:04,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:20:04,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421233881] [2020-10-28 12:20:04,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:04,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:20:04,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235917601] [2020-10-28 12:20:04,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:20:04,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:04,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:20:04,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:20:04,666 INFO L87 Difference]: Start difference. First operand 69364 states and 84457 transitions. Second operand 7 states. [2020-10-28 12:20:09,214 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:20:23,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:23,132 INFO L93 Difference]: Finished difference Result 139032 states and 169552 transitions. [2020-10-28 12:20:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:20:23,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-28 12:20:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:23,537 INFO L225 Difference]: With dead ends: 139032 [2020-10-28 12:20:23,538 INFO L226 Difference]: Without dead ends: 69674 [2020-10-28 12:20:23,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:20:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69674 states. [2020-10-28 12:20:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69674 to 69601. [2020-10-28 12:20:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69601 states. [2020-10-28 12:20:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69601 states to 69601 states and 84895 transitions. [2020-10-28 12:20:25,200 INFO L78 Accepts]: Start accepts. Automaton has 69601 states and 84895 transitions. Word has length 357 [2020-10-28 12:20:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:25,201 INFO L481 AbstractCegarLoop]: Abstraction has 69601 states and 84895 transitions. [2020-10-28 12:20:25,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:20:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 69601 states and 84895 transitions. [2020-10-28 12:20:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-28 12:20:25,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:25,213 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:25,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:20:25,214 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:25,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1805449642, now seen corresponding path program 1 times [2020-10-28 12:20:25,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:25,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97164955] [2020-10-28 12:20:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:30,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-28 12:20:30,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:20:30,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 12:20:30,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:30,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:30,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:30,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 357 [2020-10-28 12:20:30,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 12:20:30,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:30,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:30,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:20:30,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:30,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:30,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:30,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:30,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:30,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:20:30,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:20:30,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:30,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:30,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:20:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:30,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:30,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:20:30,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:20:30,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:30,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-28 12:20:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:31,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:31,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:31,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:20:31,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:31,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:20:31,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:31,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:31,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:20:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 159 proven. 3 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-28 12:20:31,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97164955] [2020-10-28 12:20:31,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:31,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:20:31,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859142756] [2020-10-28 12:20:31,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:20:31,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:31,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:20:31,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:20:31,247 INFO L87 Difference]: Start difference. First operand 69601 states and 84895 transitions. Second operand 5 states.