/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:57:50,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:57:50,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:57:50,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:57:50,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:57:50,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:57:50,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:57:50,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:57:50,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:57:50,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:57:50,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:57:50,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:57:50,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:57:50,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:57:50,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:57:50,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:57:50,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:57:50,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:57:50,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:57:50,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:57:50,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:57:50,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:57:50,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:57:50,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:57:50,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:57:50,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:57:50,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:57:50,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:57:50,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:57:50,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:57:50,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:57:50,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:57:50,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:57:50,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:57:50,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:57:50,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:57:50,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:57:50,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:57:50,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:57:50,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:57:50,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:57:50,558 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 [2020-10-26 22:57:50,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:57:50,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:57:50,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:57:50,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:57:50,606 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:57:50,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:57:50,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:57:50,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:57:50,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:57:50,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:57:50,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:57:50,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:57:50,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:57:50,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:57:50,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:57:50,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:57:50,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:57:50,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:57:50,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:57:50,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:57:50,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:57:50,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:57:50,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:57:50,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:57:50,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:57:50,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:57:50,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:57:50,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:57:50,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:57:50,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:57:51,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:57:51,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:57:51,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:57:51,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:57:51,085 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:57:51,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-26 22:57:51,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1c1a685/9e2cd575149240ccbf23c9c5fac240fb/FLAGdd06becef [2020-10-26 22:57:52,349 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:57:52,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-26 22:57:52,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1c1a685/9e2cd575149240ccbf23c9c5fac240fb/FLAGdd06becef [2020-10-26 22:57:52,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1c1a685/9e2cd575149240ccbf23c9c5fac240fb [2020-10-26 22:57:52,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:57:52,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:57:52,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:57:52,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:57:52,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:57:52,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:57:52" (1/1) ... [2020-10-26 22:57:52,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d463e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:52, skipping insertion in model container [2020-10-26 22:57:52,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:57:52" (1/1) ... [2020-10-26 22:57:52,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:57:53,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:57:54,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:57:54,374 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:57:55,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:57:55,082 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:57:55,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55 WrapperNode [2020-10-26 22:57:55,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:57:55,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:57:55,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:57:55,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:57:55,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (1/1) ... [2020-10-26 22:57:55,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (1/1) ... [2020-10-26 22:57:55,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (1/1) ... [2020-10-26 22:57:55,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (1/1) ... [2020-10-26 22:57:55,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (1/1) ... [2020-10-26 22:57:55,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (1/1) ... [2020-10-26 22:57:55,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (1/1) ... [2020-10-26 22:57:55,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:57:55,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:57:55,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:57:55,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:57:55,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (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 [2020-10-26 22:57:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:57:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:57:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:57:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:57:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:57:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:57:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:57:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:57:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:57:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:57:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:57:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:57:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:57:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:57:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:57:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:57:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:57:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:57:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:57:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:57:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:57:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:57:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:57:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:57:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:58:00,937 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:58:00,937 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:58:00,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:00 BoogieIcfgContainer [2020-10-26 22:58:00,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:58:00,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:58:00,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:58:00,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:58:00,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:57:52" (1/3) ... [2020-10-26 22:58:00,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1610837e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:58:00, skipping insertion in model container [2020-10-26 22:58:00,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:57:55" (2/3) ... [2020-10-26 22:58:00,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1610837e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:58:00, skipping insertion in model container [2020-10-26 22:58:00,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:00" (3/3) ... [2020-10-26 22:58:00,960 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label43.c [2020-10-26 22:58:00,975 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:58:00,984 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:58:01,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:58:01,061 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:58:01,061 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:58:01,061 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:58:01,061 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:58:01,061 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:58:01,062 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:58:01,062 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:58:01,062 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:58:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:58:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-26 22:58:01,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:01,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:01,129 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash -360488676, now seen corresponding path program 1 times [2020-10-26 22:58:01,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:01,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705717189] [2020-10-26 22:58:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:02,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:02,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-26 22:58:02,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-26 22:58:02,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:58:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:58:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 22:58:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 22:58:02,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:02,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:02,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:02,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:58:02,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:58:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:58:02,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705717189] [2020-10-26 22:58:02,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:58:02,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:58:02,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392726020] [2020-10-26 22:58:02,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:58:02,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:02,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:58:02,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:58:02,392 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:58:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:58:14,282 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 22:58:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:58:14,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-26 22:58:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:58:14,318 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:58:14,318 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:58:14,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:58:14,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:58:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 22:58:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 22:58:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-26 22:58:14,497 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 48 [2020-10-26 22:58:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:58:14,499 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-26 22:58:14,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:58:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-26 22:58:14,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-26 22:58:14,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:14,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:14,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:58:14,517 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:14,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1809300378, now seen corresponding path program 1 times [2020-10-26 22:58:14,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:14,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641455063] [2020-10-26 22:58:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:15,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-26 22:58:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:58:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-26 22:58:15,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:58:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:58:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:58:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:58:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:15,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:16,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:16,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:16,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:58:16,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:16,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:58:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:16,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:58:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:16,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:16,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:16,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:58:16,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 22:58:16,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:58:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:58:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:58:16,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641455063] [2020-10-26 22:58:16,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:58:16,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:58:16,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505889910] [2020-10-26 22:58:16,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:58:16,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:16,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:58:16,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:58:16,251 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-26 22:58:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:58:29,314 INFO L93 Difference]: Finished difference Result 4692 states and 7653 transitions. [2020-10-26 22:58:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:58:29,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-26 22:58:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:58:29,336 INFO L225 Difference]: With dead ends: 4692 [2020-10-26 22:58:29,337 INFO L226 Difference]: Without dead ends: 3144 [2020-10-26 22:58:29,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:58:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-10-26 22:58:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3126. [2020-10-26 22:58:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-10-26 22:58:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4444 transitions. [2020-10-26 22:58:29,447 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4444 transitions. Word has length 123 [2020-10-26 22:58:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:58:29,449 INFO L481 AbstractCegarLoop]: Abstraction has 3126 states and 4444 transitions. [2020-10-26 22:58:29,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:58:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4444 transitions. [2020-10-26 22:58:29,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 22:58:29,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:29,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:29,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:58:29,452 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:29,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:29,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1956670702, now seen corresponding path program 1 times [2020-10-26 22:58:29,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:29,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700238451] [2020-10-26 22:58:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:29,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:30,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:30,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:58:30,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:58:30,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-10-26 22:58:30,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:30,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:58:30,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:58:30,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:58:30,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:30,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:30,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:30,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 22:58:30,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:58:30,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:58:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:31,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:31,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 22:58:31,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 22:58:31,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:58:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 22:58:31,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:58:31,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700238451] [2020-10-26 22:58:31,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:58:31,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:58:31,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19235981] [2020-10-26 22:58:31,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:58:31,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:31,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:58:31,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:58:31,364 INFO L87 Difference]: Start difference. First operand 3126 states and 4444 transitions. Second operand 7 states. [2020-10-26 22:58:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:58:48,196 INFO L93 Difference]: Finished difference Result 9560 states and 13723 transitions. [2020-10-26 22:58:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:58:48,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-26 22:58:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:58:48,248 INFO L225 Difference]: With dead ends: 9560 [2020-10-26 22:58:48,248 INFO L226 Difference]: Without dead ends: 6440 [2020-10-26 22:58:48,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:58:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6440 states. [2020-10-26 22:58:48,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6440 to 6300. [2020-10-26 22:58:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6300 states. [2020-10-26 22:58:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 8423 transitions. [2020-10-26 22:58:48,505 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 8423 transitions. Word has length 127 [2020-10-26 22:58:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:58:48,505 INFO L481 AbstractCegarLoop]: Abstraction has 6300 states and 8423 transitions. [2020-10-26 22:58:48,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:58:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 8423 transitions. [2020-10-26 22:58:48,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-26 22:58:48,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:48,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:48,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:58:48,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:48,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1353799026, now seen corresponding path program 1 times [2020-10-26 22:58:48,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:48,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222291595] [2020-10-26 22:58:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:50,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:50,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-26 22:58:50,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:58:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1525 [2020-10-26 22:58:50,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:50,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:58:50,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:58:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 22:58:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:50,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:50,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:50,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:58:50,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:58:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:50,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:58:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:50,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:58:50,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-26 22:58:50,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:58:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:58:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:58:50,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222291595] [2020-10-26 22:58:50,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:58:50,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:58:50,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141450986] [2020-10-26 22:58:50,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:58:50,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:50,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:58:50,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:58:50,750 INFO L87 Difference]: Start difference. First operand 6300 states and 8423 transitions. Second operand 7 states. [2020-10-26 22:59:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:07,949 INFO L93 Difference]: Finished difference Result 19284 states and 26465 transitions. [2020-10-26 22:59:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:59:07,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-26 22:59:07,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:08,030 INFO L225 Difference]: With dead ends: 19284 [2020-10-26 22:59:08,031 INFO L226 Difference]: Without dead ends: 12990 [2020-10-26 22:59:08,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:59:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2020-10-26 22:59:08,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 12838. [2020-10-26 22:59:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12838 states. [2020-10-26 22:59:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12838 states to 12838 states and 16915 transitions. [2020-10-26 22:59:08,476 INFO L78 Accepts]: Start accepts. Automaton has 12838 states and 16915 transitions. Word has length 161 [2020-10-26 22:59:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:08,478 INFO L481 AbstractCegarLoop]: Abstraction has 12838 states and 16915 transitions. [2020-10-26 22:59:08,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:59:08,478 INFO L276 IsEmpty]: Start isEmpty. Operand 12838 states and 16915 transitions. [2020-10-26 22:59:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-26 22:59:08,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:08,483 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:08,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:59:08,484 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:08,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1919631598, now seen corresponding path program 1 times [2020-10-26 22:59:08,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:08,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802508536] [2020-10-26 22:59:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:10,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:10,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-26 22:59:10,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:59:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1643 [2020-10-26 22:59:10,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:59:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 22:59:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:10,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:10,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:10,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:59:10,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:59:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:59:10,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:10,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:10,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:59:10,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 22:59:10,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:59:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:59:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:11,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:11,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 22:59:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:59:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-26 22:59:11,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:11,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:11,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 22:59:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:59:11,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802508536] [2020-10-26 22:59:11,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:59:11,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:59:11,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100001856] [2020-10-26 22:59:11,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:59:11,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:11,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:59:11,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:59:11,538 INFO L87 Difference]: Start difference. First operand 12838 states and 16915 transitions. Second operand 6 states. [2020-10-26 22:59:11,915 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 22:59:12,332 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-26 22:59:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:23,409 INFO L93 Difference]: Finished difference Result 23662 states and 31640 transitions. [2020-10-26 22:59:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:59:23,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2020-10-26 22:59:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:23,466 INFO L225 Difference]: With dead ends: 23662 [2020-10-26 22:59:23,467 INFO L226 Difference]: Without dead ends: 10579 [2020-10-26 22:59:23,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:59:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10579 states. [2020-10-26 22:59:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10579 to 10477. [2020-10-26 22:59:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10477 states. [2020-10-26 22:59:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10477 states to 10477 states and 13523 transitions. [2020-10-26 22:59:23,817 INFO L78 Accepts]: Start accepts. Automaton has 10477 states and 13523 transitions. Word has length 223 [2020-10-26 22:59:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:23,818 INFO L481 AbstractCegarLoop]: Abstraction has 10477 states and 13523 transitions. [2020-10-26 22:59:23,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:59:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 10477 states and 13523 transitions. [2020-10-26 22:59:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-26 22:59:23,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:23,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:23,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:59:23,823 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:23,824 INFO L82 PathProgramCache]: Analyzing trace with hash 901785488, now seen corresponding path program 1 times [2020-10-26 22:59:23,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:23,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043692784] [2020-10-26 22:59:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:25,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-26 22:59:25,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:59:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1629 [2020-10-26 22:59:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-26 22:59:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:25,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:25,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:25,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:25,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 22:59:25,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:25,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:26,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 22:59:26,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-26 22:59:26,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-26 22:59:26,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:26,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043692784] [2020-10-26 22:59:26,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:26,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:59:26,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683006051] [2020-10-26 22:59:26,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:26,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:26,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:26,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:26,433 INFO L87 Difference]: Start difference. First operand 10477 states and 13523 transitions. Second operand 7 states. [2020-10-26 22:59:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:41,231 INFO L93 Difference]: Finished difference Result 24031 states and 32732 transitions. [2020-10-26 22:59:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:59:41,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-26 22:59:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:41,276 INFO L225 Difference]: With dead ends: 24031 [2020-10-26 22:59:41,277 INFO L226 Difference]: Without dead ends: 13560 [2020-10-26 22:59:41,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:59:41,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13560 states. [2020-10-26 22:59:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13560 to 13120. [2020-10-26 22:59:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13120 states. [2020-10-26 22:59:41,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13120 states to 13120 states and 16384 transitions. [2020-10-26 22:59:41,607 INFO L78 Accepts]: Start accepts. Automaton has 13120 states and 16384 transitions. Word has length 246 [2020-10-26 22:59:41,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:41,607 INFO L481 AbstractCegarLoop]: Abstraction has 13120 states and 16384 transitions. [2020-10-26 22:59:41,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:59:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 13120 states and 16384 transitions. [2020-10-26 22:59:41,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-26 22:59:41,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:41,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:41,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:59:41,615 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:41,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:41,615 INFO L82 PathProgramCache]: Analyzing trace with hash -896924468, now seen corresponding path program 1 times [2020-10-26 22:59:41,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:41,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814428305] [2020-10-26 22:59:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:42,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:42,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:42,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-26 22:59:42,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:59:42,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-26 22:59:42,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:59:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:59:42,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:43,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:59:43,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:59:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:59:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:43,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:43,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:43,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:59:43,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:43,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:59:43,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:59:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:59:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:43,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:43,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:59:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 22:59:43,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:59:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:59:43,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814428305] [2020-10-26 22:59:43,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:59:43,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:59:43,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021354581] [2020-10-26 22:59:43,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:43,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:43,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:43,769 INFO L87 Difference]: Start difference. First operand 13120 states and 16384 transitions. Second operand 7 states. [2020-10-26 22:59:48,170 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:00:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:03,702 INFO L93 Difference]: Finished difference Result 32179 states and 41428 transitions. [2020-10-26 23:00:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:00:03,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-26 23:00:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:03,759 INFO L225 Difference]: With dead ends: 32179 [2020-10-26 23:00:03,759 INFO L226 Difference]: Without dead ends: 19832 [2020-10-26 23:00:03,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:00:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19832 states. [2020-10-26 23:00:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19832 to 19714. [2020-10-26 23:00:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19714 states. [2020-10-26 23:00:04,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19714 states to 19714 states and 24742 transitions. [2020-10-26 23:00:04,237 INFO L78 Accepts]: Start accepts. Automaton has 19714 states and 24742 transitions. Word has length 282 [2020-10-26 23:00:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:04,238 INFO L481 AbstractCegarLoop]: Abstraction has 19714 states and 24742 transitions. [2020-10-26 23:00:04,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:04,238 INFO L276 IsEmpty]: Start isEmpty. Operand 19714 states and 24742 transitions. [2020-10-26 23:00:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-26 23:00:04,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:04,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:04,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:00:04,245 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:04,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1271333972, now seen corresponding path program 1 times [2020-10-26 23:00:04,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:04,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118310126] [2020-10-26 23:00:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:06,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-26 23:00:06,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:00:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2276 [2020-10-26 23:00:06,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 23:00:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-26 23:00:06,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:06,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:06,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:06,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:06,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:00:06,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:00:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:00:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:06,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:06,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:06,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:06,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:00:06,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:00:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 23:00:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:00:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:07,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:07,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:07,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:00:07,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 23:00:07,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:00:07,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 160 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:00:07,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118310126] [2020-10-26 23:00:07,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:07,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:00:07,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988647595] [2020-10-26 23:00:07,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:00:07,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:07,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:00:07,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:00:07,615 INFO L87 Difference]: Start difference. First operand 19714 states and 24742 transitions. Second operand 6 states. [2020-10-26 23:00:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:22,829 INFO L93 Difference]: Finished difference Result 38947 states and 49647 transitions. [2020-10-26 23:00:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 23:00:22,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2020-10-26 23:00:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:22,890 INFO L225 Difference]: With dead ends: 38947 [2020-10-26 23:00:22,890 INFO L226 Difference]: Without dead ends: 20006 [2020-10-26 23:00:22,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:00:22,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20006 states. [2020-10-26 23:00:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20006 to 18958. [2020-10-26 23:00:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18958 states. [2020-10-26 23:00:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18958 states to 18958 states and 23182 transitions. [2020-10-26 23:00:23,355 INFO L78 Accepts]: Start accepts. Automaton has 18958 states and 23182 transitions. Word has length 286 [2020-10-26 23:00:23,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:23,356 INFO L481 AbstractCegarLoop]: Abstraction has 18958 states and 23182 transitions. [2020-10-26 23:00:23,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:00:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 18958 states and 23182 transitions. [2020-10-26 23:00:23,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-26 23:00:23,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:23,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:23,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:00:23,363 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:23,364 INFO L82 PathProgramCache]: Analyzing trace with hash 197188626, now seen corresponding path program 1 times [2020-10-26 23:00:23,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:23,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766014279] [2020-10-26 23:00:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:23,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:25,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:25,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-26 23:00:25,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:00:25,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1883 [2020-10-26 23:00:25,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 23:00:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 23:00:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:25,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:25,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:00:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:00:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:00:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:25,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:25,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:00:25,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:00:25,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 23:00:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:00:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:26,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:26,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 23:00:26,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-26 23:00:26,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 23:00:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 125 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:00:26,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766014279] [2020-10-26 23:00:26,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:26,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:00:26,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281417273] [2020-10-26 23:00:26,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:00:26,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:26,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:00:26,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:00:26,304 INFO L87 Difference]: Start difference. First operand 18958 states and 23182 transitions. Second operand 7 states. [2020-10-26 23:00:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:46,817 INFO L93 Difference]: Finished difference Result 54260 states and 71834 transitions. [2020-10-26 23:00:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:00:46,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-26 23:00:46,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:46,931 INFO L225 Difference]: With dead ends: 54260 [2020-10-26 23:00:46,932 INFO L226 Difference]: Without dead ends: 36075 [2020-10-26 23:00:46,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:00:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36075 states. [2020-10-26 23:00:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36075 to 35380. [2020-10-26 23:00:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35380 states. [2020-10-26 23:00:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35380 states to 35380 states and 42641 transitions. [2020-10-26 23:00:47,765 INFO L78 Accepts]: Start accepts. Automaton has 35380 states and 42641 transitions. Word has length 287 [2020-10-26 23:00:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:47,766 INFO L481 AbstractCegarLoop]: Abstraction has 35380 states and 42641 transitions. [2020-10-26 23:00:47,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:47,766 INFO L276 IsEmpty]: Start isEmpty. Operand 35380 states and 42641 transitions. [2020-10-26 23:00:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-26 23:00:47,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:47,773 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:47,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:00:47,773 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:47,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:47,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1997799898, now seen corresponding path program 1 times [2020-10-26 23:00:47,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:47,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079663657] [2020-10-26 23:00:47,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:47,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:52,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:52,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-26 23:00:52,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:00:52,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4655 [2020-10-26 23:00:52,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:52,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:52,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:52,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:00:52,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:52,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:00:52,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:52,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:52,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:52,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:00:52,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-26 23:00:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:00:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:53,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 23:00:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:53,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:53,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:53,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:00:53,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:53,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:00:53,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:00:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:00:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:00:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 80 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:00:53,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079663657] [2020-10-26 23:00:53,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:53,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:00:53,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745353308] [2020-10-26 23:00:53,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:00:53,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:53,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:00:53,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:00:53,545 INFO L87 Difference]: Start difference. First operand 35380 states and 42641 transitions. Second operand 7 states. [2020-10-26 23:00:53,715 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 23:00:56,396 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:01:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:13,978 INFO L93 Difference]: Finished difference Result 76975 states and 94723 transitions. [2020-10-26 23:01:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:01:13,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-26 23:01:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:14,109 INFO L225 Difference]: With dead ends: 76975 [2020-10-26 23:01:14,109 INFO L226 Difference]: Without dead ends: 42368 [2020-10-26 23:01:14,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:01:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42368 states. [2020-10-26 23:01:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42368 to 41866. [2020-10-26 23:01:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41866 states. [2020-10-26 23:01:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41866 states to 41866 states and 49766 transitions. [2020-10-26 23:01:15,282 INFO L78 Accepts]: Start accepts. Automaton has 41866 states and 49766 transitions. Word has length 291 [2020-10-26 23:01:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:01:15,283 INFO L481 AbstractCegarLoop]: Abstraction has 41866 states and 49766 transitions. [2020-10-26 23:01:15,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:01:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 41866 states and 49766 transitions. [2020-10-26 23:01:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-26 23:01:15,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:01:15,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:01:15,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:01:15,289 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:01:15,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:01:15,290 INFO L82 PathProgramCache]: Analyzing trace with hash -383052176, now seen corresponding path program 1 times [2020-10-26 23:01:15,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:01:15,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769832366] [2020-10-26 23:01:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:01:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:16,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:16,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-26 23:01:16,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-26 23:01:16,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-26 23:01:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 23:01:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:16,406 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:01:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:01:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:16,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:16,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:01:16,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:01:16,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:01:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:01:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:01:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:16,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:01:16,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:01:16,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:01:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:01:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:16,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 23:01:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:16,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:16,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 23:01:16,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:16,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:01:16,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:01:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 23:01:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 23:01:16,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769832366] [2020-10-26 23:01:16,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:01:16,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:01:16,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517654303] [2020-10-26 23:01:16,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:01:16,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:01:16,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:01:16,775 INFO L87 Difference]: Start difference. First operand 41866 states and 49766 transitions. Second operand 5 states. [2020-10-26 23:01:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:36,325 INFO L93 Difference]: Finished difference Result 98952 states and 121948 transitions. [2020-10-26 23:01:36,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:01:36,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-26 23:01:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:36,506 INFO L225 Difference]: With dead ends: 98952 [2020-10-26 23:01:36,506 INFO L226 Difference]: Without dead ends: 57090 [2020-10-26 23:01:36,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:01:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57090 states.