/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:11:52,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:11:52,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:11:52,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:11:52,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:11:52,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:11:52,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:11:52,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:11:52,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:11:52,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:11:52,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:11:52,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:11:52,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:11:52,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:11:52,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:11:52,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:11:52,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:11:52,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:11:53,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:11:53,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:11:53,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:11:53,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:11:53,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:11:53,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:11:53,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:11:53,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:11:53,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:11:53,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:11:53,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:11:53,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:11:53,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:11:53,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:11:53,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:11:53,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:11:53,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:11:53,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:11:53,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:11:53,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:11:53,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:11:53,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:11:53,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:11:53,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:11:53,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:11:53,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:11:53,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:11:53,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:11:53,079 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:11:53,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:11:53,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:11:53,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:11:53,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:11:53,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:11:53,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:11:53,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:11:53,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:11:53,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:11:53,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:11:53,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:11:53,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:11:53,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:11:53,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:11:53,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:11:53,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:11:53,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:11:53,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:11:53,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:11:53,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:11:53,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:11:53,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:11:53,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:11:53,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:11:53,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:11:53,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:11:53,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:11:53,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:11:53,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:11:53,524 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:11:53,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label07.c [2020-10-29 08:11:53,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0725b1cc/4496934f6d5f42edab1a74125d47ed05/FLAG3623f6205 [2020-10-29 08:11:54,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:11:54,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label07.c [2020-10-29 08:11:54,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0725b1cc/4496934f6d5f42edab1a74125d47ed05/FLAG3623f6205 [2020-10-29 08:11:55,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0725b1cc/4496934f6d5f42edab1a74125d47ed05 [2020-10-29 08:11:55,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:11:55,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:11:55,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:11:55,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:11:55,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:11:55,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:11:55" (1/1) ... [2020-10-29 08:11:55,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e56838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:55, skipping insertion in model container [2020-10-29 08:11:55,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:11:55" (1/1) ... [2020-10-29 08:11:55,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:11:55,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:11:56,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:11:56,240 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:11:56,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:11:56,663 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:11:56,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56 WrapperNode [2020-10-29 08:11:56,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:11:56,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:11:56,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:11:56,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:11:56,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (1/1) ... [2020-10-29 08:11:56,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (1/1) ... [2020-10-29 08:11:56,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (1/1) ... [2020-10-29 08:11:56,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (1/1) ... [2020-10-29 08:11:56,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (1/1) ... [2020-10-29 08:11:56,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (1/1) ... [2020-10-29 08:11:56,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (1/1) ... [2020-10-29 08:11:56,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:11:56,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:11:56,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:11:56,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:11:56,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:11:56,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:11:56,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:11:56,990 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:11:56,990 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:11:56,990 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:11:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:11:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:11:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:11:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:11:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:11:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:11:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:11:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:11:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:11:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:11:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:11:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:11:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:11:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:11:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:11:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:12:06,158 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:12:06,158 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:12:06,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:12:06 BoogieIcfgContainer [2020-10-29 08:12:06,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:12:06,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:12:06,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:12:06,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:12:06,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:11:55" (1/3) ... [2020-10-29 08:12:06,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc4f47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:12:06, skipping insertion in model container [2020-10-29 08:12:06,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:56" (2/3) ... [2020-10-29 08:12:06,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc4f47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:12:06, skipping insertion in model container [2020-10-29 08:12:06,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:12:06" (3/3) ... [2020-10-29 08:12:06,175 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label07.c [2020-10-29 08:12:06,188 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:12:06,195 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:12:06,209 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:12:06,260 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:12:06,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:12:06,260 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:12:06,261 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:12:06,261 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:12:06,261 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:12:06,261 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:12:06,261 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:12:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:12:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 08:12:06,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:06,314 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] [2020-10-29 08:12:06,314 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:06,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:06,323 INFO L82 PathProgramCache]: Analyzing trace with hash -379654902, now seen corresponding path program 1 times [2020-10-29 08:12:06,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:06,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683450217] [2020-10-29 08:12:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:07,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 08:12:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-29 08:12:07,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:07,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:12:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 08:12:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:12:07,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:07,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:07,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:07,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:07,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:12:07,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:07,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:12:07,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683450217] [2020-10-29 08:12:07,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:12:07,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:12:07,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94436321] [2020-10-29 08:12:07,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:12:07,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:07,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:12:07,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:12:07,405 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 5 states. [2020-10-29 08:12:24,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:24,404 INFO L93 Difference]: Finished difference Result 2174 states and 4022 transitions. [2020-10-29 08:12:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:12:24,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-29 08:12:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:24,437 INFO L225 Difference]: With dead ends: 2174 [2020-10-29 08:12:24,437 INFO L226 Difference]: Without dead ends: 1473 [2020-10-29 08:12:24,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:12:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-10-29 08:12:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1444. [2020-10-29 08:12:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-10-29 08:12:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2113 transitions. [2020-10-29 08:12:24,608 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2113 transitions. Word has length 34 [2020-10-29 08:12:24,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:24,609 INFO L481 AbstractCegarLoop]: Abstraction has 1444 states and 2113 transitions. [2020-10-29 08:12:24,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:12:24,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2113 transitions. [2020-10-29 08:12:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 08:12:24,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:24,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:24,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:12:24,616 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:24,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1595204042, now seen corresponding path program 1 times [2020-10-29 08:12:24,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:24,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116020707] [2020-10-29 08:12:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:25,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:25,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 08:12:25,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:12:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-29 08:12:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:25,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:12:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:12:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:12:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:26,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:26,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:26,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:12:26,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:26,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:26,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:26,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:12:26,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 08:12:26,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:26,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:12:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:12:26,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116020707] [2020-10-29 08:12:26,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:12:26,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:12:26,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263118932] [2020-10-29 08:12:26,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:12:26,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:12:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:12:26,465 INFO L87 Difference]: Start difference. First operand 1444 states and 2113 transitions. Second operand 7 states. [2020-10-29 08:12:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:40,897 INFO L93 Difference]: Finished difference Result 3834 states and 5699 transitions. [2020-10-29 08:12:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:12:40,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-29 08:12:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:40,936 INFO L225 Difference]: With dead ends: 3834 [2020-10-29 08:12:40,937 INFO L226 Difference]: Without dead ends: 2396 [2020-10-29 08:12:40,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:12:40,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2020-10-29 08:12:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1915. [2020-10-29 08:12:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-29 08:12:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2484 transitions. [2020-10-29 08:12:41,041 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2484 transitions. Word has length 105 [2020-10-29 08:12:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:41,042 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2484 transitions. [2020-10-29 08:12:41,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:12:41,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2484 transitions. [2020-10-29 08:12:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 08:12:41,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:41,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:41,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:12:41,055 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:41,056 INFO L82 PathProgramCache]: Analyzing trace with hash 964249751, now seen corresponding path program 1 times [2020-10-29 08:12:41,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:41,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597484519] [2020-10-29 08:12:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:41,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:41,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 08:12:41,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-29 08:12:41,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:41,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:12:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 08:12:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:41,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:41,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:41,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:41,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:12:41,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:41,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:41,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:41,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:41,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:12:41,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 08:12:41,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:41,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:12:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:12:41,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597484519] [2020-10-29 08:12:41,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:41,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:12:41,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533253776] [2020-10-29 08:12:41,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:12:41,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:41,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:12:41,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:12:41,887 INFO L87 Difference]: Start difference. First operand 1915 states and 2484 transitions. Second operand 5 states. [2020-10-29 08:12:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:55,538 INFO L93 Difference]: Finished difference Result 4732 states and 6294 transitions. [2020-10-29 08:12:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:12:55,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-29 08:12:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:55,558 INFO L225 Difference]: With dead ends: 4732 [2020-10-29 08:12:55,559 INFO L226 Difference]: Without dead ends: 2377 [2020-10-29 08:12:55,565 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 [2020-10-29 08:12:55,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-10-29 08:12:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2358. [2020-10-29 08:12:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-10-29 08:12:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2902 transitions. [2020-10-29 08:12:55,679 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2902 transitions. Word has length 108 [2020-10-29 08:12:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:55,680 INFO L481 AbstractCegarLoop]: Abstraction has 2358 states and 2902 transitions. [2020-10-29 08:12:55,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:12:55,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2902 transitions. [2020-10-29 08:12:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 08:12:55,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:55,694 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:12:55,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:12:55,695 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:55,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:55,696 INFO L82 PathProgramCache]: Analyzing trace with hash -647633594, now seen corresponding path program 1 times [2020-10-29 08:12:55,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:55,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189413935] [2020-10-29 08:12:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:57,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:57,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-29 08:12:57,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:12:57,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1541 [2020-10-29 08:12:57,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:57,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:57,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:12:57,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:12:57,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:57,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:57,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:57,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:57,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:12:57,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:57,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:57,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:57,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:57,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:57,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:12:57,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:12:57,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:57,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:12:57,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:12:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:57,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:57,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:57,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:12:57,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:57,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 08:12:57,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:57,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:57,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:12:57,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:12:58,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189413935] [2020-10-29 08:12:58,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:58,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:12:58,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831555949] [2020-10-29 08:12:58,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:12:58,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:58,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:12:58,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:12:58,107 INFO L87 Difference]: Start difference. First operand 2358 states and 2902 transitions. Second operand 7 states. [2020-10-29 08:13:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:14,719 INFO L93 Difference]: Finished difference Result 6518 states and 8209 transitions. [2020-10-29 08:13:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:13:14,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-29 08:13:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:14,749 INFO L225 Difference]: With dead ends: 6518 [2020-10-29 08:13:14,750 INFO L226 Difference]: Without dead ends: 4166 [2020-10-29 08:13:14,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:13:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2020-10-29 08:13:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3725. [2020-10-29 08:13:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3725 states. [2020-10-29 08:13:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 4581 transitions. [2020-10-29 08:13:14,897 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 4581 transitions. Word has length 194 [2020-10-29 08:13:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:14,899 INFO L481 AbstractCegarLoop]: Abstraction has 3725 states and 4581 transitions. [2020-10-29 08:13:14,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:13:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 4581 transitions. [2020-10-29 08:13:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 08:13:14,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:14,904 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:13:14,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:13:14,904 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash -109964574, now seen corresponding path program 1 times [2020-10-29 08:13:14,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:14,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268406840] [2020-10-29 08:13:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:19,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:19,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 08:13:19,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:13:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4376 [2020-10-29 08:13:19,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:19,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:13:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:13:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:13:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:19,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:19,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:19,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:13:19,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:19,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:13:19,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:13:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:19,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:19,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:19,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 08:13:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:19,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:13:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:13:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:20,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:13:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:20,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:20,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:13:20,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:20,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 08:13:20,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:20,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:13:20,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 121 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:13:20,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268406840] [2020-10-29 08:13:20,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:20,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:13:20,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028895550] [2020-10-29 08:13:20,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:13:20,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:20,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:13:20,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:13:20,486 INFO L87 Difference]: Start difference. First operand 3725 states and 4581 transitions. Second operand 10 states. [2020-10-29 08:13:20,694 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:13:24,921 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:13:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:39,040 INFO L93 Difference]: Finished difference Result 11186 states and 14042 transitions. [2020-10-29 08:13:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 08:13:39,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 196 [2020-10-29 08:13:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:39,090 INFO L225 Difference]: With dead ends: 11186 [2020-10-29 08:13:39,090 INFO L226 Difference]: Without dead ends: 7466 [2020-10-29 08:13:39,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-29 08:13:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2020-10-29 08:13:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 7399. [2020-10-29 08:13:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7399 states. [2020-10-29 08:13:39,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 8662 transitions. [2020-10-29 08:13:39,326 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 8662 transitions. Word has length 196 [2020-10-29 08:13:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:39,327 INFO L481 AbstractCegarLoop]: Abstraction has 7399 states and 8662 transitions. [2020-10-29 08:13:39,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:13:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 8662 transitions. [2020-10-29 08:13:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 08:13:39,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:39,331 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:13:39,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:13:39,332 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:39,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:39,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1928077928, now seen corresponding path program 1 times [2020-10-29 08:13:39,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:39,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369380083] [2020-10-29 08:13:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:39,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:44,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:44,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 08:13:44,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:13:44,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 08:13:44,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:44,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:13:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:13:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 08:13:44,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:44,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:44,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:44,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:44,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:13:44,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:44,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:44,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 08:13:44,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:44,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:13:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:13:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:45,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:13:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 08:13:45,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:45,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:13:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:13:45,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369380083] [2020-10-29 08:13:45,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:45,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:13:45,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349376077] [2020-10-29 08:13:45,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:13:45,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:45,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:13:45,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:13:45,126 INFO L87 Difference]: Start difference. First operand 7399 states and 8662 transitions. Second operand 5 states. [2020-10-29 08:13:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:59,016 INFO L93 Difference]: Finished difference Result 14795 states and 17682 transitions. [2020-10-29 08:13:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:13:59,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-29 08:13:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:59,066 INFO L225 Difference]: With dead ends: 14795 [2020-10-29 08:13:59,067 INFO L226 Difference]: Without dead ends: 7842 [2020-10-29 08:13:59,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:13:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2020-10-29 08:13:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7832. [2020-10-29 08:13:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7832 states. [2020-10-29 08:13:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7832 states to 7832 states and 9244 transitions. [2020-10-29 08:13:59,322 INFO L78 Accepts]: Start accepts. Automaton has 7832 states and 9244 transitions. Word has length 207 [2020-10-29 08:13:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:59,325 INFO L481 AbstractCegarLoop]: Abstraction has 7832 states and 9244 transitions. [2020-10-29 08:13:59,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:13:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 7832 states and 9244 transitions. [2020-10-29 08:13:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-29 08:13:59,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:59,331 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:59,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:13:59,332 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:59,333 INFO L82 PathProgramCache]: Analyzing trace with hash -673036932, now seen corresponding path program 1 times [2020-10-29 08:13:59,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:59,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429316631] [2020-10-29 08:13:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:00,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:00,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 08:14:00,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-29 08:14:00,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:00,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-29 08:14:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:14:00,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:00,409 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:14:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:00,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:00,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:00,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:00,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:14:00,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:00,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:00,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:00,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:00,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:00,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:00,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:14:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:00,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:00,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:14:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:00,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:00,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:14:00,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 08:14:00,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:00,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:00,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:14:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:14:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:00,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:00,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:00,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:14:00,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:00,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 08:14:00,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:00,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:14:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 60 [2020-10-29 08:14:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 08:14:01,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429316631] [2020-10-29 08:14:01,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:01,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:14:01,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142312044] [2020-10-29 08:14:01,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:14:01,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:01,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:14:01,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:14:01,167 INFO L87 Difference]: Start difference. First operand 7832 states and 9244 transitions. Second operand 7 states. [2020-10-29 08:14:20,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:20,137 INFO L93 Difference]: Finished difference Result 18128 states and 21982 transitions. [2020-10-29 08:14:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:14:20,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-29 08:14:20,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:20,192 INFO L225 Difference]: With dead ends: 18128 [2020-10-29 08:14:20,193 INFO L226 Difference]: Without dead ends: 10742 [2020-10-29 08:14:20,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:14:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10742 states. [2020-10-29 08:14:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10742 to 9770. [2020-10-29 08:14:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9770 states. [2020-10-29 08:14:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9770 states to 9770 states and 11874 transitions. [2020-10-29 08:14:20,491 INFO L78 Accepts]: Start accepts. Automaton has 9770 states and 11874 transitions. Word has length 278 [2020-10-29 08:14:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:20,492 INFO L481 AbstractCegarLoop]: Abstraction has 9770 states and 11874 transitions. [2020-10-29 08:14:20,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:14:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 9770 states and 11874 transitions. [2020-10-29 08:14:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-29 08:14:20,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:20,499 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:20,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:14:20,499 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:20,500 INFO L82 PathProgramCache]: Analyzing trace with hash -743800908, now seen corresponding path program 1 times [2020-10-29 08:14:20,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:20,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914400253] [2020-10-29 08:14:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:25,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:25,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 08:14:25,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:14:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 08:14:25,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:25,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:14:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:14:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:25,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:25,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:25,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:14:25,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:25,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:26,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:26,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:26,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:26,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 08:14:26,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:26,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:14:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:14:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:26,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:26,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:26,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:14:26,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 08:14:26,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:26,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:14:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:14:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:26,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:26,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:14:26,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 08:14:26,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:26,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:26,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:26,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:14:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 86 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-29 08:14:26,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914400253] [2020-10-29 08:14:26,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:26,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:14:26,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105696123] [2020-10-29 08:14:26,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:14:26,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:26,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:14:26,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:14:26,976 INFO L87 Difference]: Start difference. First operand 9770 states and 11874 transitions. Second operand 9 states. [2020-10-29 08:14:27,156 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:14:35,782 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:14:57,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:57,573 INFO L93 Difference]: Finished difference Result 29217 states and 38828 transitions. [2020-10-29 08:14:57,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 08:14:57,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 282 [2020-10-29 08:14:57,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:57,706 INFO L225 Difference]: With dead ends: 29217 [2020-10-29 08:14:57,706 INFO L226 Difference]: Without dead ends: 19893 [2020-10-29 08:14:57,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:14:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19893 states. [2020-10-29 08:14:58,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19893 to 18318. [2020-10-29 08:14:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18318 states. [2020-10-29 08:14:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18318 states to 18318 states and 22851 transitions. [2020-10-29 08:14:58,387 INFO L78 Accepts]: Start accepts. Automaton has 18318 states and 22851 transitions. Word has length 282 [2020-10-29 08:14:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:58,388 INFO L481 AbstractCegarLoop]: Abstraction has 18318 states and 22851 transitions. [2020-10-29 08:14:58,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:14:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 18318 states and 22851 transitions. [2020-10-29 08:14:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 08:14:58,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:58,397 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:58,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:14:58,397 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:58,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1959290723, now seen corresponding path program 1 times [2020-10-29 08:14:58,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:58,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61050778] [2020-10-29 08:14:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:02,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:02,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 08:15:02,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:15:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4195 [2020-10-29 08:15:02,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:02,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:02,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:02,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:15:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 08:15:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:02,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:02,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:02,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:02,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:02,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:02,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:15:02,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:02,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:02,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:03,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:03,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:03,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:03,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:15:03,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:03,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:15:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:03,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:03,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:15:03,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-29 08:15:03,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:03,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:15:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 08:15:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:03,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:03,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:15:03,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:15:03,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:03,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:15:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 166 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:15:03,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61050778] [2020-10-29 08:15:03,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:03,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:03,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456678375] [2020-10-29 08:15:03,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:03,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:03,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:03,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:03,914 INFO L87 Difference]: Start difference. First operand 18318 states and 22851 transitions. Second operand 7 states. [2020-10-29 08:15:10,978 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 08:15:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:23,369 INFO L93 Difference]: Finished difference Result 38152 states and 47814 transitions. [2020-10-29 08:15:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:15:23,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-29 08:15:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:23,446 INFO L225 Difference]: With dead ends: 38152 [2020-10-29 08:15:23,447 INFO L226 Difference]: Without dead ends: 20280 [2020-10-29 08:15:23,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:15:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2020-10-29 08:15:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 20155. [2020-10-29 08:15:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20155 states. [2020-10-29 08:15:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20155 states to 20155 states and 25078 transitions. [2020-10-29 08:15:23,930 INFO L78 Accepts]: Start accepts. Automaton has 20155 states and 25078 transitions. Word has length 301 [2020-10-29 08:15:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:23,931 INFO L481 AbstractCegarLoop]: Abstraction has 20155 states and 25078 transitions. [2020-10-29 08:15:23,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:15:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 20155 states and 25078 transitions. [2020-10-29 08:15:23,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 08:15:23,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:23,938 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:15:23,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:15:23,938 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:23,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:23,939 INFO L82 PathProgramCache]: Analyzing trace with hash 899831093, now seen corresponding path program 1 times [2020-10-29 08:15:23,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:23,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685220038] [2020-10-29 08:15:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:24,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:24,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:24,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-29 08:15:24,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-10-29 08:15:24,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:24,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-29 08:15:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 08:15:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:24,962 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:15:24,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:24,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:24,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:24,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:24,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:15:24,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:24,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:25,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:25,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:25,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:25,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:15:25,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:25,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:25,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:15:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:25,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:15:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:15:25,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:25,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:15:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:25,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:15:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 08:15:25,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 08:15:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:25,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 08:15:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 08:15:25,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685220038] [2020-10-29 08:15:25,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:25,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:25,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697239139] [2020-10-29 08:15:25,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:25,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:25,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:25,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:25,767 INFO L87 Difference]: Start difference. First operand 20155 states and 25078 transitions. Second operand 7 states. [2020-10-29 08:15:29,431 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:15:32,294 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 69