/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:26:35,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:26:35,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:26:35,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:26:35,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:26:35,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:26:35,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:26:35,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:26:35,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:26:35,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:26:35,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:26:35,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:26:35,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:26:35,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:26:35,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:26:35,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:26:35,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:26:35,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:26:35,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:26:35,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:26:35,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:26:35,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:26:35,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:26:35,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:26:36,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:26:36,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:26:36,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:26:36,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:26:36,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:26:36,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:26:36,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:26:36,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:26:36,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:26:36,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:26:36,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:26:36,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:26:36,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:26:36,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:26:36,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:26:36,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:26:36,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:26:36,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:26:36,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:26:36,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:26:36,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:26:36,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:26:36,099 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:26:36,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:26:36,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:26:36,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:26:36,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:26:36,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:26:36,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:26:36,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:26:36,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:26:36,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:26:36,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:26:36,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:26:36,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:26:36,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:26:36,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:26:36,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:26:36,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:26:36,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:26:36,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:26:36,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:26:36,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:26:36,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:26:36,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:26:36,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:26:36,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:26:36,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:26:36,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:26:36,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:26:36,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:26:36,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:26:36,647 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:26:36,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55.c [2020-10-28 12:26:36,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed9e19d0/f19c10d0a4f44d3ebeecf2372da5f93a/FLAG1fd3009b8 [2020-10-28 12:26:37,918 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:26:37,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label55.c [2020-10-28 12:26:37,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed9e19d0/f19c10d0a4f44d3ebeecf2372da5f93a/FLAG1fd3009b8 [2020-10-28 12:26:38,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed9e19d0/f19c10d0a4f44d3ebeecf2372da5f93a [2020-10-28 12:26:38,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:26:38,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:26:38,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:26:38,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:26:38,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:26:38,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:26:38" (1/1) ... [2020-10-28 12:26:38,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51464909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:38, skipping insertion in model container [2020-10-28 12:26:38,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:26:38" (1/1) ... [2020-10-28 12:26:38,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:26:38,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:26:40,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:26:40,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:26:41,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:26:41,143 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:26:41,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41 WrapperNode [2020-10-28 12:26:41,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:26:41,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:26:41,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:26:41,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:26:41,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (1/1) ... [2020-10-28 12:26:41,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (1/1) ... [2020-10-28 12:26:41,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (1/1) ... [2020-10-28 12:26:41,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (1/1) ... [2020-10-28 12:26:41,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (1/1) ... [2020-10-28 12:26:41,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (1/1) ... [2020-10-28 12:26:41,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (1/1) ... [2020-10-28 12:26:41,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:26:41,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:26:41,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:26:41,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:26:41,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:26:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:26:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:26:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:26:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:26:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:26:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:26:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:26:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:26:47,006 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:26:47,007 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:26:47,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:26:47 BoogieIcfgContainer [2020-10-28 12:26:47,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:26:47,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:26:47,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:26:47,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:26:47,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:26:38" (1/3) ... [2020-10-28 12:26:47,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e40ba39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:26:47, skipping insertion in model container [2020-10-28 12:26:47,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:41" (2/3) ... [2020-10-28 12:26:47,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e40ba39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:26:47, skipping insertion in model container [2020-10-28 12:26:47,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:26:47" (3/3) ... [2020-10-28 12:26:47,030 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label55.c [2020-10-28 12:26:47,048 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:26:47,057 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:26:47,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:26:47,141 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:26:47,141 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:26:47,141 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:26:47,142 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:26:47,142 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:26:47,142 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:26:47,142 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:26:47,142 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:26:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:26:47,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 12:26:47,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:47,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:26:47,214 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:47,226 INFO L82 PathProgramCache]: Analyzing trace with hash -744967124, now seen corresponding path program 1 times [2020-10-28 12:26:47,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:47,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462798078] [2020-10-28 12:26:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:47,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:47,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:47,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 12:26:47,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-28 12:26:47,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:47,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 12:26:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:26:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:48,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:48,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:48,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:48,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:26:48,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:48,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:26:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:48,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462798078] [2020-10-28 12:26:48,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:48,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:26:48,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004284654] [2020-10-28 12:26:48,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:26:48,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:48,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:26:48,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:26:48,305 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:27:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:00,199 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-28 12:27:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:27:00,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 12:27:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:00,238 INFO L225 Difference]: With dead ends: 2492 [2020-10-28 12:27:00,238 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:27:00,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:27:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:27:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-28 12:27:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-28 12:27:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-28 12:27:00,473 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 15 [2020-10-28 12:27:00,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:00,474 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-28 12:27:00,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:27:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-28 12:27:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 12:27:00,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:00,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:27:00,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:27:00,485 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:00,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:00,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1591770005, now seen corresponding path program 1 times [2020-10-28 12:27:00,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:00,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331773189] [2020-10-28 12:27:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:01,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:01,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:27:01,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1340 [2020-10-28 12:27:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:01,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:27:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:27:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:02,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:02,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:02,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:27:02,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:02,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:02,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:02,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:27:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:02,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:02,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:27:02,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 12:27:02,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:02,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:27:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:27:02,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331773189] [2020-10-28 12:27:02,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:27:02,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:27:02,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568538183] [2020-10-28 12:27:02,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:02,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:02,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:02,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:02,632 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-28 12:27:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:16,917 INFO L93 Difference]: Finished difference Result 4763 states and 7585 transitions. [2020-10-28 12:27:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:27:16,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-28 12:27:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:16,947 INFO L225 Difference]: With dead ends: 4763 [2020-10-28 12:27:16,950 INFO L226 Difference]: Without dead ends: 3204 [2020-10-28 12:27:16,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:27:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2020-10-28 12:27:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3144. [2020-10-28 12:27:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3144 states. [2020-10-28 12:27:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4560 transitions. [2020-10-28 12:27:17,110 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4560 transitions. Word has length 94 [2020-10-28 12:27:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:17,111 INFO L481 AbstractCegarLoop]: Abstraction has 3144 states and 4560 transitions. [2020-10-28 12:27:17,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4560 transitions. [2020-10-28 12:27:17,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 12:27:17,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:17,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:27:17,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:27:17,117 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:17,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1011750395, now seen corresponding path program 1 times [2020-10-28 12:27:17,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:17,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486050028] [2020-10-28 12:27:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:17,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 12:27:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-10-28 12:27:19,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:19,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:27:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:27:19,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:19,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:19,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:19,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:27:19,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:19,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:19,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:19,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:27:19,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-28 12:27:19,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:19,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:19,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:19,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:27:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:27:19,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486050028] [2020-10-28 12:27:19,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:27:19,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:27:19,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007981271] [2020-10-28 12:27:19,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:19,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:19,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:19,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:19,827 INFO L87 Difference]: Start difference. First operand 3144 states and 4560 transitions. Second operand 7 states. [2020-10-28 12:27:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:35,167 INFO L93 Difference]: Finished difference Result 9657 states and 14131 transitions. [2020-10-28 12:27:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:27:35,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-28 12:27:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:35,213 INFO L225 Difference]: With dead ends: 9657 [2020-10-28 12:27:35,214 INFO L226 Difference]: Without dead ends: 6519 [2020-10-28 12:27:35,225 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 [2020-10-28 12:27:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2020-10-28 12:27:35,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 6344. [2020-10-28 12:27:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6344 states. [2020-10-28 12:27:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 8122 transitions. [2020-10-28 12:27:35,479 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 8122 transitions. Word has length 123 [2020-10-28 12:27:35,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:35,482 INFO L481 AbstractCegarLoop]: Abstraction has 6344 states and 8122 transitions. [2020-10-28 12:27:35,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 8122 transitions. [2020-10-28 12:27:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 12:27:35,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:35,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:27:35,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:27:35,497 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:35,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:35,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1961057561, now seen corresponding path program 1 times [2020-10-28 12:27:35,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:35,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38761563] [2020-10-28 12:27:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:36,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:36,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:36,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:27:36,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-28 12:27:36,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:36,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:27:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 12:27:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:36,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:36,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:27:36,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:36,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:36,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:36,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:27:36,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 12:27:36,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:36,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:27:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:27:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:27:36,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38761563] [2020-10-28 12:27:36,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:36,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:27:36,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436749027] [2020-10-28 12:27:36,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:27:36,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:27:36,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:27:36,978 INFO L87 Difference]: Start difference. First operand 6344 states and 8122 transitions. Second operand 5 states. [2020-10-28 12:27:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:51,637 INFO L93 Difference]: Finished difference Result 18955 states and 24711 transitions. [2020-10-28 12:27:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:27:51,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 12:27:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:51,728 INFO L225 Difference]: With dead ends: 18955 [2020-10-28 12:27:51,728 INFO L226 Difference]: Without dead ends: 12617 [2020-10-28 12:27:51,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:27:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12617 states. [2020-10-28 12:27:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12617 to 11848. [2020-10-28 12:27:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11848 states. [2020-10-28 12:27:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 14738 transitions. [2020-10-28 12:27:52,191 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 14738 transitions. Word has length 160 [2020-10-28 12:27:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:52,194 INFO L481 AbstractCegarLoop]: Abstraction has 11848 states and 14738 transitions. [2020-10-28 12:27:52,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:27:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 14738 transitions. [2020-10-28 12:27:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 12:27:52,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:52,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:27:52,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:27:52,202 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:52,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1272803243, now seen corresponding path program 1 times [2020-10-28 12:27:52,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:52,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187854991] [2020-10-28 12:27:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:54,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:54,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 12:27:54,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1749 [2020-10-28 12:27:54,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:54,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:27:54,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:54,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:54,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:54,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:54,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:27:54,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:54,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:54,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:54,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:54,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:27:54,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:54,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-28 12:27:54,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:54,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:27:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:27:54,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187854991] [2020-10-28 12:27:54,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:27:54,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:27:54,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681756808] [2020-10-28 12:27:54,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:54,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:54,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:54,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:54,861 INFO L87 Difference]: Start difference. First operand 11848 states and 14738 transitions. Second operand 7 states. [2020-10-28 12:28:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:11,470 INFO L93 Difference]: Finished difference Result 28613 states and 35283 transitions. [2020-10-28 12:28:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:28:11,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-10-28 12:28:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:11,558 INFO L225 Difference]: With dead ends: 28613 [2020-10-28 12:28:11,558 INFO L226 Difference]: Without dead ends: 16771 [2020-10-28 12:28:11,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:28:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16771 states. [2020-10-28 12:28:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16771 to 16705. [2020-10-28 12:28:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16705 states. [2020-10-28 12:28:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16705 states to 16705 states and 20164 transitions. [2020-10-28 12:28:12,032 INFO L78 Accepts]: Start accepts. Automaton has 16705 states and 20164 transitions. Word has length 163 [2020-10-28 12:28:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:12,033 INFO L481 AbstractCegarLoop]: Abstraction has 16705 states and 20164 transitions. [2020-10-28 12:28:12,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:28:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 16705 states and 20164 transitions. [2020-10-28 12:28:12,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-28 12:28:12,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:12,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:12,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:28:12,040 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:12,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:12,041 INFO L82 PathProgramCache]: Analyzing trace with hash 227062168, now seen corresponding path program 1 times [2020-10-28 12:28:12,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:12,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652552285] [2020-10-28 12:28:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:13,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:13,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-28 12:28:13,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-28 12:28:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:13,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:28:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:28:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:13,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:13,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:13,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:13,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:13,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:28:13,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:13,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:13,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:13,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:13,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:13,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:13,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:28:13,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:13,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:28:13,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:13,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:13,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:13,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:13,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:28:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:28:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:14,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:14,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:28:14,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 12:28:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:14,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:28:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:28:14,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652552285] [2020-10-28 12:28:14,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:14,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:28:14,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600986564] [2020-10-28 12:28:14,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:14,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:14,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:14,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:14,342 INFO L87 Difference]: Start difference. First operand 16705 states and 20164 transitions. Second operand 7 states. [2020-10-28 12:28:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:31,949 INFO L93 Difference]: Finished difference Result 39174 states and 49200 transitions. [2020-10-28 12:28:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:28:31,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-28 12:28:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:32,024 INFO L225 Difference]: With dead ends: 39174 [2020-10-28 12:28:32,024 INFO L226 Difference]: Without dead ends: 20089 [2020-10-28 12:28:32,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:28:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20089 states. [2020-10-28 12:28:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20089 to 19977. [2020-10-28 12:28:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19977 states. [2020-10-28 12:28:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19977 states to 19977 states and 23578 transitions. [2020-10-28 12:28:32,489 INFO L78 Accepts]: Start accepts. Automaton has 19977 states and 23578 transitions. Word has length 203 [2020-10-28 12:28:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:32,490 INFO L481 AbstractCegarLoop]: Abstraction has 19977 states and 23578 transitions. [2020-10-28 12:28:32,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:28:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 19977 states and 23578 transitions. [2020-10-28 12:28:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-28 12:28:32,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:32,494 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:32,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:28:32,495 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:32,496 INFO L82 PathProgramCache]: Analyzing trace with hash -222718884, now seen corresponding path program 1 times [2020-10-28 12:28:32,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:32,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994942549] [2020-10-28 12:28:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:33,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:34,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:34,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 12:28:34,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:34,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1626 [2020-10-28 12:28:34,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:34,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:28:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:28:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:34,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:34,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:34,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:28:34,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:34,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:28:34,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 12:28:34,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:34,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:28:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:28:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:34,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:34,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:34,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:28:34,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:34,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:28:34,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:34,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:28:34,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 91 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:28:35,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994942549] [2020-10-28 12:28:35,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:35,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:28:35,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082103843] [2020-10-28 12:28:35,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:28:35,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:35,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:28:35,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:28:35,076 INFO L87 Difference]: Start difference. First operand 19977 states and 23578 transitions. Second operand 6 states. [2020-10-28 12:28:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:51,772 INFO L93 Difference]: Finished difference Result 49165 states and 60304 transitions. [2020-10-28 12:28:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:28:51,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2020-10-28 12:28:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:51,877 INFO L225 Difference]: With dead ends: 49165 [2020-10-28 12:28:51,877 INFO L226 Difference]: Without dead ends: 29961 [2020-10-28 12:28:51,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:28:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29961 states. [2020-10-28 12:28:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29961 to 29047. [2020-10-28 12:28:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29047 states. [2020-10-28 12:28:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29047 states to 29047 states and 35194 transitions. [2020-10-28 12:28:52,605 INFO L78 Accepts]: Start accepts. Automaton has 29047 states and 35194 transitions. Word has length 249 [2020-10-28 12:28:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:52,606 INFO L481 AbstractCegarLoop]: Abstraction has 29047 states and 35194 transitions. [2020-10-28 12:28:52,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:28:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 29047 states and 35194 transitions. [2020-10-28 12:28:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 12:28:52,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:52,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:52,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:28:52,611 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:52,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1401275564, now seen corresponding path program 1 times [2020-10-28 12:28:52,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:52,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591727497] [2020-10-28 12:28:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:54,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 12:28:54,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2001 [2020-10-28 12:28:54,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:54,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:28:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:28:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:54,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:54,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:28:54,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:54,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:54,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:55,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:55,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:28:55,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:28:55,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:55,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:28:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:55,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:28:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:55,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:28:55,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:28:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:28:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:55,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:28:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:28:55,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591727497] [2020-10-28 12:28:55,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:55,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:28:55,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370866714] [2020-10-28 12:28:55,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:28:55,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:55,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:28:55,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:28:55,449 INFO L87 Difference]: Start difference. First operand 29047 states and 35194 transitions. Second operand 6 states. [2020-10-28 12:29:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:18,397 INFO L93 Difference]: Finished difference Result 91215 states and 117998 transitions. [2020-10-28 12:29:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:29:18,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 253 [2020-10-28 12:29:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:18,655 INFO L225 Difference]: With dead ends: 91215 [2020-10-28 12:29:18,655 INFO L226 Difference]: Without dead ends: 62941 [2020-10-28 12:29:18,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:29:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62941 states. [2020-10-28 12:29:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62941 to 59828. [2020-10-28 12:29:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59828 states. [2020-10-28 12:29:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59828 states to 59828 states and 77465 transitions. [2020-10-28 12:29:20,516 INFO L78 Accepts]: Start accepts. Automaton has 59828 states and 77465 transitions. Word has length 253 [2020-10-28 12:29:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:20,517 INFO L481 AbstractCegarLoop]: Abstraction has 59828 states and 77465 transitions. [2020-10-28 12:29:20,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:29:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 59828 states and 77465 transitions. [2020-10-28 12:29:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-28 12:29:20,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:20,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:29:20,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:29:20,524 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:20,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1085176554, now seen corresponding path program 1 times [2020-10-28 12:29:20,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:20,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985692949] [2020-10-28 12:29:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:20,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:22,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:22,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 12:29:22,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:29:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-28 12:29:22,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:22,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:29:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:29:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:29:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:23,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:23,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:23,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:23,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:29:23,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:23,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:23,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:23,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:23,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:29:23,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:23,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:29:23,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:23,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:29:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:29:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:23,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:23,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:29:23,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:29:23,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-28 12:29:23,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:23,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:23,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:23,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:23,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:29:23,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:29:23,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985692949] [2020-10-28 12:29:23,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:23,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:29:23,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256622896] [2020-10-28 12:29:23,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:29:23,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:29:23,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:29:23,875 INFO L87 Difference]: Start difference. First operand 59828 states and 77465 transitions. Second operand 7 states. [2020-10-28 12:29:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:46,468 INFO L93 Difference]: Finished difference Result 139091 states and 186334 transitions. [2020-10-28 12:29:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:29:46,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-28 12:29:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:46,827 INFO L225 Difference]: With dead ends: 139091 [2020-10-28 12:29:46,828 INFO L226 Difference]: Without dead ends: 80036 [2020-10-28 12:29:46,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:29:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80036 states. [2020-10-28 12:29:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80036 to 75294. [2020-10-28 12:29:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75294 states. [2020-10-28 12:29:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75294 states to 75294 states and 97862 transitions. [2020-10-28 12:29:50,338 INFO L78 Accepts]: Start accepts. Automaton has 75294 states and 97862 transitions. Word has length 254 [2020-10-28 12:29:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:50,345 INFO L481 AbstractCegarLoop]: Abstraction has 75294 states and 97862 transitions. [2020-10-28 12:29:50,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 75294 states and 97862 transitions. [2020-10-28 12:29:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 12:29:50,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:50,375 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:29:50,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:29:50,376 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:50,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:50,376 INFO L82 PathProgramCache]: Analyzing trace with hash -579379308, now seen corresponding path program 1 times [2020-10-28 12:29:50,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:50,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685697520] [2020-10-28 12:29:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:51,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:51,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-28 12:29:51,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:51,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-28 12:29:51,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:51,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:29:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 12:29:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:29:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:51,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:51,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:51,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:29:51,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:51,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:51,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:51,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:29:51,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:29:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:51,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:51,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:29:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:51,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:51,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:51,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:29:51,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:51,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:29:51,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:51,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:29:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:29:52,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685697520] [2020-10-28 12:29:52,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:52,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:29:52,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574669122] [2020-10-28 12:29:52,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:29:52,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:52,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:29:52,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:29:52,129 INFO L87 Difference]: Start difference. First operand 75294 states and 97862 transitions. Second operand 5 states. [2020-10-28 12:30:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:15,858 INFO L93 Difference]: Finished difference Result 182383 states and 245001 transitions. [2020-10-28 12:30:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:30:15,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-28 12:30:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:16,496 INFO L225 Difference]: With dead ends: 182383 [2020-10-28 12:30:16,496 INFO L226 Difference]: Without dead ends: 107862 [2020-10-28 12:30:16,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:30:16,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107862 states.