/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:44:38,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:44:38,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:44:38,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:44:38,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:44:38,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:44:38,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:44:38,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:44:38,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:44:38,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:44:38,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:44:38,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:44:38,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:44:38,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:44:38,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:44:38,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:44:38,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:44:38,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:44:38,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:44:38,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:44:38,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:44:38,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:44:38,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:44:38,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:44:38,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:44:38,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:44:38,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:44:38,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:44:38,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:44:38,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:44:38,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:44:38,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:44:38,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:44:38,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:44:38,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:44:38,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:44:38,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:44:38,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:44:38,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:44:38,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:44:38,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:44:38,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:44:38,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:44:38,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:44:38,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:44:38,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:44:38,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:44:38,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:44:38,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:44:38,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:44:38,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:44:38,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:44:38,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:44:38,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:44:38,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:44:38,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:44:38,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:44:38,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:44:38,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:44:38,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:44:38,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:44:38,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:44:38,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:44:38,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:44:38,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:44:38,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:44:38,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:44:38,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:44:38,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:44:38,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:44:38,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:44:38,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:44:39,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:44:39,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:44:39,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:44:39,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:44:39,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:44:39,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label10.c [2020-10-29 08:44:39,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e07ed2fd/12686ddffc444f969da4764816b170fd/FLAG584d52bac [2020-10-29 08:44:40,710 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:44:40,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label10.c [2020-10-29 08:44:40,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e07ed2fd/12686ddffc444f969da4764816b170fd/FLAG584d52bac [2020-10-29 08:44:40,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e07ed2fd/12686ddffc444f969da4764816b170fd [2020-10-29 08:44:40,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:44:40,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:44:40,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:44:40,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:44:40,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:44:40,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:44:40" (1/1) ... [2020-10-29 08:44:40,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7f0b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:40, skipping insertion in model container [2020-10-29 08:44:40,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:44:40" (1/1) ... [2020-10-29 08:44:40,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:44:41,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:44:43,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:44:43,635 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:44:44,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:44:45,034 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:44:45,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45 WrapperNode [2020-10-29 08:44:45,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:44:45,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:44:45,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:44:45,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:44:45,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (1/1) ... [2020-10-29 08:44:45,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (1/1) ... [2020-10-29 08:44:45,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (1/1) ... [2020-10-29 08:44:45,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (1/1) ... [2020-10-29 08:44:45,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (1/1) ... [2020-10-29 08:44:45,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (1/1) ... [2020-10-29 08:44:45,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (1/1) ... [2020-10-29 08:44:45,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:44:45,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:44:45,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:44:45,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:44:45,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:44:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:44:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:44:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:44:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:44:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:44:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:44:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:44:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:44:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:44:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:44:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:44:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:44:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:44:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:44:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:44:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:44:46,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:44:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:44:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:44:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:44:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:44:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:44:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:44:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:44:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:44:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:44:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:44:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:44:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:45:04,074 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:45:04,075 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:45:04,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:45:04 BoogieIcfgContainer [2020-10-29 08:45:04,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:45:04,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:45:04,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:45:04,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:45:04,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:44:40" (1/3) ... [2020-10-29 08:45:04,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e93216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:45:04, skipping insertion in model container [2020-10-29 08:45:04,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:44:45" (2/3) ... [2020-10-29 08:45:04,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e93216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:45:04, skipping insertion in model container [2020-10-29 08:45:04,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:45:04" (3/3) ... [2020-10-29 08:45:04,097 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label10.c [2020-10-29 08:45:04,118 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:45:04,126 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:45:04,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:45:04,190 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:45:04,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:45:04,190 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:45:04,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:45:04,191 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:45:04,191 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:45:04,191 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:45:04,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:45:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:45:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 08:45:04,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:45:04,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:45:04,258 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:45:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:45:04,266 INFO L82 PathProgramCache]: Analyzing trace with hash -13683635, now seen corresponding path program 1 times [2020-10-29 08:45:04,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:45:04,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897240243] [2020-10-29 08:45:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:45:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:05,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:05,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 08:45:05,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:05,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-29 08:45:05,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:05,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:45:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:45:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 08:45:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 08:45:05,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:45:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:05,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:05,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:45:05,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:45:05,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:05,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:05,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:45:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:45:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:45:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:45:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:45:05,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897240243] [2020-10-29 08:45:05,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:45:05,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:45:05,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602779305] [2020-10-29 08:45:05,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:45:05,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:45:05,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:45:05,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:45:05,562 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-29 08:45:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:45:42,561 INFO L93 Difference]: Finished difference Result 5036 states and 9459 transitions. [2020-10-29 08:45:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:45:42,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-29 08:45:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:45:42,618 INFO L225 Difference]: With dead ends: 5036 [2020-10-29 08:45:42,618 INFO L226 Difference]: Without dead ends: 3191 [2020-10-29 08:45:42,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:45:42,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2020-10-29 08:45:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3185. [2020-10-29 08:45:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3185 states. [2020-10-29 08:45:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4966 transitions. [2020-10-29 08:45:42,887 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4966 transitions. Word has length 14 [2020-10-29 08:45:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:45:42,888 INFO L481 AbstractCegarLoop]: Abstraction has 3185 states and 4966 transitions. [2020-10-29 08:45:42,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:45:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4966 transitions. [2020-10-29 08:45:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 08:45:42,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:45:42,897 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:45:42,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:45:42,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:45:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:45:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1897134161, now seen corresponding path program 1 times [2020-10-29 08:45:42,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:45:42,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293673716] [2020-10-29 08:45:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:45:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:45,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:45,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 08:45:45,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:45:45,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2478 [2020-10-29 08:45:45,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:45,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:45:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:45:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:45:45,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:45:45,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:45:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:45,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:45:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:45:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:45:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:45,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:45:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:45:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:45:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:45:45,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:45:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:45:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:45:46,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:45:46,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:45:46,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:45:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 08:45:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:45:46,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:45:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:45:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:45:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:45:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:45:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:45:46,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293673716] [2020-10-29 08:45:46,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:45:46,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:45:46,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030484616] [2020-10-29 08:45:46,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:45:46,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:45:46,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:45:46,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:45:46,184 INFO L87 Difference]: Start difference. First operand 3185 states and 4966 transitions. Second operand 8 states. [2020-10-29 08:46:37,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:46:37,455 INFO L93 Difference]: Finished difference Result 9390 states and 14783 transitions. [2020-10-29 08:46:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:46:37,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-29 08:46:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:46:37,496 INFO L225 Difference]: With dead ends: 9390 [2020-10-29 08:46:37,496 INFO L226 Difference]: Without dead ends: 6211 [2020-10-29 08:46:37,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:46:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2020-10-29 08:46:37,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 6114. [2020-10-29 08:46:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6114 states. [2020-10-29 08:46:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 9479 transitions. [2020-10-29 08:46:37,711 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 9479 transitions. Word has length 87 [2020-10-29 08:46:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:46:37,712 INFO L481 AbstractCegarLoop]: Abstraction has 6114 states and 9479 transitions. [2020-10-29 08:46:37,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:46:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 9479 transitions. [2020-10-29 08:46:37,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 08:46:37,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:46:37,715 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:46:37,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:46:37,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:46:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:46:37,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1244844952, now seen corresponding path program 1 times [2020-10-29 08:46:37,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:46:37,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148319683] [2020-10-29 08:46:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:46:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:38,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:38,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:46:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:46:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-29 08:46:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:38,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:46:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:46:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:46:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:46:38,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:46:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:38,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:38,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:46:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:46:38,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:38,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:46:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:46:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:46:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:46:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:46:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:46:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:46:38,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:46:38,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 08:46:38,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:46:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 08:46:38,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:46:38,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:46:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:46:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:46:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:46:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:46:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:46:39,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148319683] [2020-10-29 08:46:39,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:46:39,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:46:39,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134991063] [2020-10-29 08:46:39,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:46:39,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:46:39,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:46:39,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:46:39,116 INFO L87 Difference]: Start difference. First operand 6114 states and 9479 transitions. Second operand 7 states. [2020-10-29 08:47:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:47:30,903 INFO L93 Difference]: Finished difference Result 18462 states and 28923 transitions. [2020-10-29 08:47:30,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:47:30,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 08:47:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:47:30,986 INFO L225 Difference]: With dead ends: 18462 [2020-10-29 08:47:30,986 INFO L226 Difference]: Without dead ends: 12354 [2020-10-29 08:47:31,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:47:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2020-10-29 08:47:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 12204. [2020-10-29 08:47:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12204 states. [2020-10-29 08:47:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12204 states to 12204 states and 18351 transitions. [2020-10-29 08:47:31,441 INFO L78 Accepts]: Start accepts. Automaton has 12204 states and 18351 transitions. Word has length 95 [2020-10-29 08:47:31,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:47:31,443 INFO L481 AbstractCegarLoop]: Abstraction has 12204 states and 18351 transitions. [2020-10-29 08:47:31,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:47:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 12204 states and 18351 transitions. [2020-10-29 08:47:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 08:47:31,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:47:31,457 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:47:31,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:47:31,458 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:47:31,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:47:31,458 INFO L82 PathProgramCache]: Analyzing trace with hash 773926958, now seen corresponding path program 1 times [2020-10-29 08:47:31,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:47:31,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294596203] [2020-10-29 08:47:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:47:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:32,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:32,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 08:47:32,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:47:32,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1189 [2020-10-29 08:47:32,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:32,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:32,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:47:32,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:47:32,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 08:47:32,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:47:32,894 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:47:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:47:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:32,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:32,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:32,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:47:32,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:47:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:47:32,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:32,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:47:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:47:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:47:32,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:47:32,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:47:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:47:33,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:47:33,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:47:33,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 08:47:33,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:47:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 08:47:33,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:47:33,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:47:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:47:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:47:33,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:47:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:47:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:47:33,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294596203] [2020-10-29 08:47:33,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:47:33,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:47:33,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439963988] [2020-10-29 08:47:33,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:47:33,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:47:33,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:47:33,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:47:33,349 INFO L87 Difference]: Start difference. First operand 12204 states and 18351 transitions. Second operand 7 states. [2020-10-29 08:47:33,516 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 68