/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/Problem13_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:33:31,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:33:31,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:33:31,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:33:31,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:33:31,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:33:31,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:33:31,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:33:31,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:33:31,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:33:31,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:33:31,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:33:31,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:33:31,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:33:31,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:33:31,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:33:31,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:33:31,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:33:31,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:33:31,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:33:31,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:33:31,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:33:31,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:33:31,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:33:31,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:33:31,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:33:31,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:33:31,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:33:31,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:33:31,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:33:31,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:33:31,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:33:31,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:33:31,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:33:31,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:33:31,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:33:31,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:33:31,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:33:31,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:33:31,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:33:31,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:33:31,916 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 12:33:31,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:33:31,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:33:31,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:33:31,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:33:31,973 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:33:31,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:33:31,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:33:31,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:33:31,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:33:31,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:33:31,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:33:31,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:33:31,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:33:31,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:33:31,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:33:31,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:33:31,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:33:31,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:33:31,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:33:31,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:33:31,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:33:31,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:33:31,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:33:31,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:33:31,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:33:31,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:33:31,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:33:31,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:33:31,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:33:31,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:33:32,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:33:32,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:33:32,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:33:32,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:33:32,430 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:33:32,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-28 12:33:32,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fa6e8db/34fc9dedd558419693491231e0bbc222/FLAG3cbe395f1 [2020-10-28 12:33:33,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:33:33,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-28 12:33:33,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fa6e8db/34fc9dedd558419693491231e0bbc222/FLAG3cbe395f1 [2020-10-28 12:33:33,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fa6e8db/34fc9dedd558419693491231e0bbc222 [2020-10-28 12:33:33,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:33:33,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:33:33,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:33:33,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:33:33,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:33:33,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:33" (1/1) ... [2020-10-28 12:33:33,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36eca81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33, skipping insertion in model container [2020-10-28 12:33:33,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:33" (1/1) ... [2020-10-28 12:33:33,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:33:34,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:33:35,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:33:35,721 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:33:36,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:33:36,647 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:33:36,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36 WrapperNode [2020-10-28 12:33:36,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:33:36,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:33:36,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:33:36,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:33:36,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (1/1) ... [2020-10-28 12:33:36,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (1/1) ... [2020-10-28 12:33:36,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (1/1) ... [2020-10-28 12:33:36,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (1/1) ... [2020-10-28 12:33:36,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (1/1) ... [2020-10-28 12:33:36,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (1/1) ... [2020-10-28 12:33:37,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (1/1) ... [2020-10-28 12:33:37,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:33:37,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:33:37,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:33:37,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:33:37,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (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 12:33:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:33:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:33:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:33:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:33:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:33:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:33:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:33:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:33:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:33:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:33:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:33:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:33:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:33:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:33:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:33:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:33:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:33:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:33:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:33:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:33:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:33:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:33:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:33:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:33:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:33:46,345 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:33:46,346 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:33:46,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:46 BoogieIcfgContainer [2020-10-28 12:33:46,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:33:46,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:33:46,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:33:46,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:33:46,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:33:33" (1/3) ... [2020-10-28 12:33:46,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbbbddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:46, skipping insertion in model container [2020-10-28 12:33:46,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:36" (2/3) ... [2020-10-28 12:33:46,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbbbddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:46, skipping insertion in model container [2020-10-28 12:33:46,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:46" (3/3) ... [2020-10-28 12:33:46,363 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2020-10-28 12:33:46,380 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:33:46,387 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:33:46,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:33:46,450 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:33:46,450 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:33:46,450 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:33:46,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:33:46,451 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:33:46,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:33:46,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:33:46,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:33:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:33:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 12:33:46,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:46,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:33:46,504 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:46,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:46,514 INFO L82 PathProgramCache]: Analyzing trace with hash -22941566, now seen corresponding path program 1 times [2020-10-28 12:33:46,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:46,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599057007] [2020-10-28 12:33:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:47,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:47,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 12:33:47,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-28 12:33:47,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:47,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:33:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:33:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 12:33:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:33:47,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:47,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:47,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:47,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:47,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:47,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:33:47,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:47,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:47,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:33:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:47,418 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 12:33:47,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599057007] [2020-10-28 12:33:47,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:33:47,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:33:47,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101555362] [2020-10-28 12:33:47,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:33:47,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:47,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:33:47,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:33:47,445 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:34:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:34:05,104 INFO L93 Difference]: Finished difference Result 3112 states and 5735 transitions. [2020-10-28 12:34:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:34:05,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 12:34:05,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:34:05,151 INFO L225 Difference]: With dead ends: 3112 [2020-10-28 12:34:05,151 INFO L226 Difference]: Without dead ends: 1904 [2020-10-28 12:34:05,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 12:34:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-28 12:34:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1884. [2020-10-28 12:34:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-28 12:34:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2891 transitions. [2020-10-28 12:34:05,391 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2891 transitions. Word has length 24 [2020-10-28 12:34:05,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:34:05,391 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2891 transitions. [2020-10-28 12:34:05,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:34:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2891 transitions. [2020-10-28 12:34:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 12:34:05,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:34:05,399 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:34:05,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:34:05,400 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:34:05,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:34:05,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1910687866, now seen corresponding path program 1 times [2020-10-28 12:34:05,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:34:05,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940570922] [2020-10-28 12:34:05,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:34:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:05,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:06,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:06,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:34:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:34:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-28 12:34:06,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:06,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:34:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:34:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:34:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:34:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:06,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:06,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:06,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:06,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:34:06,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:06,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:34:06,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:06,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:34:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:07,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:34:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:34:07,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:07,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:34:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:34:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:34:07,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940570922] [2020-10-28 12:34:07,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:34:07,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:34:07,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554863831] [2020-10-28 12:34:07,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:34:07,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:07,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:34:07,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:34:07,189 INFO L87 Difference]: Start difference. First operand 1884 states and 2891 transitions. Second operand 7 states. [2020-10-28 12:34:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:34:25,440 INFO L93 Difference]: Finished difference Result 5679 states and 8693 transitions. [2020-10-28 12:34:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:34:25,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-28 12:34:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:34:25,469 INFO L225 Difference]: With dead ends: 5679 [2020-10-28 12:34:25,469 INFO L226 Difference]: Without dead ends: 3801 [2020-10-28 12:34:25,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:34:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-10-28 12:34:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3709. [2020-10-28 12:34:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3709 states. [2020-10-28 12:34:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5285 transitions. [2020-10-28 12:34:25,598 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5285 transitions. Word has length 93 [2020-10-28 12:34:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:34:25,599 INFO L481 AbstractCegarLoop]: Abstraction has 3709 states and 5285 transitions. [2020-10-28 12:34:25,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:34:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5285 transitions. [2020-10-28 12:34:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 12:34:25,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:34:25,601 INFO L422 BasicCegarLoop]: trace histogram [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 12:34:25,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:34:25,602 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:34:25,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:34:25,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1206531254, now seen corresponding path program 1 times [2020-10-28 12:34:25,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:34:25,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195402323] [2020-10-28 12:34:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:34:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 12:34:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:34:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-28 12:34:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:26,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:34:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:34:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:34:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:34:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:26,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:26,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:26,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:34:26,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:26,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:26,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:34:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:34:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:26,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:34:26,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 12:34:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:26,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:34:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:34:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:34:27,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195402323] [2020-10-28 12:34:27,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:34:27,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:34:27,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124827470] [2020-10-28 12:34:27,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:34:27,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:27,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:34:27,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:34:27,102 INFO L87 Difference]: Start difference. First operand 3709 states and 5285 transitions. Second operand 8 states. [2020-10-28 12:34:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:34:53,921 INFO L93 Difference]: Finished difference Result 14200 states and 20633 transitions. [2020-10-28 12:34:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:34:53,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-28 12:34:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:34:53,988 INFO L225 Difference]: With dead ends: 14200 [2020-10-28 12:34:53,988 INFO L226 Difference]: Without dead ends: 10497 [2020-10-28 12:34:54,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:34:54,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2020-10-28 12:34:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 10440. [2020-10-28 12:34:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10440 states. [2020-10-28 12:34:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10440 states to 10440 states and 13832 transitions. [2020-10-28 12:34:54,342 INFO L78 Accepts]: Start accepts. Automaton has 10440 states and 13832 transitions. Word has length 101 [2020-10-28 12:34:54,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:34:54,346 INFO L481 AbstractCegarLoop]: Abstraction has 10440 states and 13832 transitions. [2020-10-28 12:34:54,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:34:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 10440 states and 13832 transitions. [2020-10-28 12:34:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 12:34:54,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:34:54,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:34:54,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:34:54,362 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:34:54,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:34:54,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1802594663, now seen corresponding path program 1 times [2020-10-28 12:34:54,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:34:54,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890303185] [2020-10-28 12:34:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:34:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:54,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:54,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 12:34:54,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-28 12:34:54,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:54,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:34:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 12:34:54,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:34:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:54,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:54,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:54,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:54,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:34:54,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:54,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:34:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:34:54,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:54,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:34:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:55,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:55,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:55,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:34:55,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:34:55,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:55,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:34:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:34:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:34:55,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890303185] [2020-10-28 12:34:55,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:34:55,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:34:55,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754067217] [2020-10-28 12:34:55,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:34:55,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:55,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:34:55,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:34:55,358 INFO L87 Difference]: Start difference. First operand 10440 states and 13832 transitions. Second operand 5 states. [2020-10-28 12:35:16,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:16,257 INFO L93 Difference]: Finished difference Result 22521 states and 31122 transitions. [2020-10-28 12:35:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:35:16,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-28 12:35:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:16,327 INFO L225 Difference]: With dead ends: 22521 [2020-10-28 12:35:16,328 INFO L226 Difference]: Without dead ends: 12890 [2020-10-28 12:35:16,356 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 12:35:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12890 states. [2020-10-28 12:35:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12890 to 12861. [2020-10-28 12:35:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12861 states. [2020-10-28 12:35:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12861 states to 12861 states and 16900 transitions. [2020-10-28 12:35:16,713 INFO L78 Accepts]: Start accepts. Automaton has 12861 states and 16900 transitions. Word has length 153 [2020-10-28 12:35:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:16,714 INFO L481 AbstractCegarLoop]: Abstraction has 12861 states and 16900 transitions. [2020-10-28 12:35:16,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:35:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 12861 states and 16900 transitions. [2020-10-28 12:35:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 12:35:16,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:16,718 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 12:35:16,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:35:16,719 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:16,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:16,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1014592226, now seen corresponding path program 1 times [2020-10-28 12:35:16,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:16,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055029423] [2020-10-28 12:35:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:16,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:16,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:17,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:20,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:20,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-28 12:35:20,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:35:20,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3989 [2020-10-28 12:35:20,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:20,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:35:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:35:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 12:35:20,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:20,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:35:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:20,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:20,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:35:20,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:20,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:35:20,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:20,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:20,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:35:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:35:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:35:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:21,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:35:21,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 12:35:21,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:21,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:21,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:35:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:35:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:35:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:21,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:21,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:35:21,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:35:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 12:35:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:21,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:21,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:35:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:35:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 12:35:21,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055029423] [2020-10-28 12:35:21,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:35:21,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:35:21,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784523818] [2020-10-28 12:35:21,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:35:21,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:35:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:35:21,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:35:21,487 INFO L87 Difference]: Start difference. First operand 12861 states and 16900 transitions. Second operand 6 states. [2020-10-28 12:35:45,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:45,871 INFO L93 Difference]: Finished difference Result 29119 states and 39277 transitions. [2020-10-28 12:35:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:35:45,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2020-10-28 12:35:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:46,001 INFO L225 Difference]: With dead ends: 29119 [2020-10-28 12:35:46,001 INFO L226 Difference]: Without dead ends: 17067 [2020-10-28 12:35:46,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:35:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17067 states. [2020-10-28 12:35:46,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17067 to 17020. [2020-10-28 12:35:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17020 states. [2020-10-28 12:35:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17020 states to 17020 states and 21454 transitions. [2020-10-28 12:35:46,451 INFO L78 Accepts]: Start accepts. Automaton has 17020 states and 21454 transitions. Word has length 194 [2020-10-28 12:35:46,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:46,453 INFO L481 AbstractCegarLoop]: Abstraction has 17020 states and 21454 transitions. [2020-10-28 12:35:46,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:35:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 17020 states and 21454 transitions. [2020-10-28 12:35:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-28 12:35:46,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:46,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:35:46,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:35:46,458 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:46,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:46,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2101643306, now seen corresponding path program 1 times [2020-10-28 12:35:46,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:46,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568339974] [2020-10-28 12:35:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:46,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:47,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:50,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:50,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-28 12:35:50,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:35:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3894 [2020-10-28 12:35:50,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:50,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:35:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:35:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:35:50,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:35:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:35:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:50,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:50,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:50,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:35:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:35:50,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:50,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:35:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:35:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:35:50,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:35:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:50,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:35:50,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:35:50,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:50,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:35:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:35:50,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:35:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:50,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:50,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:35:50,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:35:50,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 12:35:50,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:50,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:35:50,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:35:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 12:35:51,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568339974] [2020-10-28 12:35:51,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:35:51,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:35:51,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557624881] [2020-10-28 12:35:51,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:35:51,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:35:51,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:35:51,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:35:51,113 INFO L87 Difference]: Start difference. First operand 17020 states and 21454 transitions. Second operand 6 states. [2020-10-28 12:35:51,277 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:35:52,246 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:36:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:36:27,065 INFO L93 Difference]: Finished difference Result 59741 states and 80840 transitions. [2020-10-28 12:36:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:36:27,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-10-28 12:36:27,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:36:27,272 INFO L225 Difference]: With dead ends: 59741 [2020-10-28 12:36:27,272 INFO L226 Difference]: Without dead ends: 43533 [2020-10-28 12:36:27,412 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 12:36:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43533 states. [2020-10-28 12:36:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43533 to 42590. [2020-10-28 12:36:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42590 states. [2020-10-28 12:36:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42590 states to 42590 states and 57034 transitions. [2020-10-28 12:36:28,575 INFO L78 Accepts]: Start accepts. Automaton has 42590 states and 57034 transitions. Word has length 203 [2020-10-28 12:36:28,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:36:28,576 INFO L481 AbstractCegarLoop]: Abstraction has 42590 states and 57034 transitions. [2020-10-28 12:36:28,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:36:28,576 INFO L276 IsEmpty]: Start isEmpty. Operand 42590 states and 57034 transitions. [2020-10-28 12:36:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 12:36:28,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:36:28,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:36:28,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:36:28,585 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:36:28,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:36:28,586 INFO L82 PathProgramCache]: Analyzing trace with hash -498660626, now seen corresponding path program 1 times [2020-10-28 12:36:28,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:36:28,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210346722] [2020-10-28 12:36:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:36:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:30,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:33,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:33,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 12:36:33,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:36:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4952 [2020-10-28 12:36:33,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:33,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:36:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:36:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:36:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:36:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:36:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:33,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:33,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:36:33,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:36:33,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:33,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:36:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:36:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:36:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:36:33,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:36:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:33,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:33,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:36:33,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:36:33,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:33,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:36:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:36:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:36:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:36:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:36:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:36:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:36:34,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:36:34,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:36:34,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:36:34,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:36:34,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:36:34,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:36:34,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:36:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 12:36:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:36:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:36:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:36:34,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210346722] [2020-10-28 12:36:34,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:36:34,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 12:36:34,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617719427] [2020-10-28 12:36:34,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:36:34,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:36:34,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:36:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:36:34,249 INFO L87 Difference]: Start difference. First operand 42590 states and 57034 transitions. Second operand 5 states. [2020-10-28 12:36:35,294 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:37:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:37:04,555 INFO L93 Difference]: Finished difference Result 102486 states and 149436 transitions. [2020-10-28 12:37:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:37:04,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-28 12:37:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:37:05,150 INFO L225 Difference]: With dead ends: 102486 [2020-10-28 12:37:05,150 INFO L226 Difference]: Without dead ends: 72095 [2020-10-28 12:37:05,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:37:05,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72095 states. [2020-10-28 12:37:07,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72095 to 72094. [2020-10-28 12:37:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72094 states. [2020-10-28 12:37:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72094 states to 72094 states and 98287 transitions. [2020-10-28 12:37:07,740 INFO L78 Accepts]: Start accepts. Automaton has 72094 states and 98287 transitions. Word has length 273 [2020-10-28 12:37:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:37:07,741 INFO L481 AbstractCegarLoop]: Abstraction has 72094 states and 98287 transitions. [2020-10-28 12:37:07,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:37:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 72094 states and 98287 transitions. [2020-10-28 12:37:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-28 12:37:07,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:07,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:37:07,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:37:07,876 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:07,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:07,881 INFO L82 PathProgramCache]: Analyzing trace with hash 334521956, now seen corresponding path program 1 times [2020-10-28 12:37:07,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:07,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716599316] [2020-10-28 12:37:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:13,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:13,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:13,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 12:37:13,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:37:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 12:37:13,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:13,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:37:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-28 12:37:13,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:13,360 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:37:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:13,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:37:13,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:13,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:37:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:37:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:13,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:37:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:13,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:37:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 12:37:13,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:13,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:37:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:37:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:13,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:13,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:37:13,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:37:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 12:37:13,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:13,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:37:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 12:37:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:37:14,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:37:14,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-28 12:37:14,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:14,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:37:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:37:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:37:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:37:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 212 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 12:37:14,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716599316] [2020-10-28 12:37:14,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:37:14,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:37:14,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929828431] [2020-10-28 12:37:14,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:37:14,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:14,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:37:14,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:37:14,392 INFO L87 Difference]: Start difference. First operand 72094 states and 98287 transitions. Second operand 7 states. [2020-10-28 12:37:14,537 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66