/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:20:21,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:20:21,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:20:21,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:20:21,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:20:21,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:20:21,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:20:21,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:20:21,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:20:21,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:20:21,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:20:21,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:20:21,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:20:21,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:20:21,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:20:21,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:20:21,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:20:21,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:20:21,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:20:21,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:20:21,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:20:21,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:20:21,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:20:21,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:20:21,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:20:21,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:20:21,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:20:21,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:20:21,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:20:21,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:20:21,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:20:21,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:20:21,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:20:21,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:20:21,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:20:21,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:20:21,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:20:21,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:20:21,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:20:21,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:20:21,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:20:21,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:20:21,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:20:21,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:20:21,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:20:21,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:20:21,404 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:20:21,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:20:21,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:20:21,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:20:21,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:20:21,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:20:21,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:20:21,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:20:21,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:20:21,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:20:21,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:20:21,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:20:21,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:20:21,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:20:21,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:20:21,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:20:21,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:20:21,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:20:21,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:20:21,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:20:21,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:20:21,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:20:21,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:20:21,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:20:21,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:20:21,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:20:21,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:20:21,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:20:21,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:20:21,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:20:21,871 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:20:21,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label40.c [2020-10-29 08:20:21,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f856309f/572baaebf30f4d55a739e3822983aad6/FLAG840ce10ab [2020-10-29 08:20:22,992 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:20:22,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label40.c [2020-10-29 08:20:23,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f856309f/572baaebf30f4d55a739e3822983aad6/FLAG840ce10ab [2020-10-29 08:20:23,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f856309f/572baaebf30f4d55a739e3822983aad6 [2020-10-29 08:20:23,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:20:23,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:20:23,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:20:23,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:20:23,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:20:23,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:20:23" (1/1) ... [2020-10-29 08:20:23,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5a2305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:23, skipping insertion in model container [2020-10-29 08:20:23,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:20:23" (1/1) ... [2020-10-29 08:20:23,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:20:23,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:20:24,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:20:24,854 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:20:25,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:20:25,510 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:20:25,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25 WrapperNode [2020-10-29 08:20:25,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:20:25,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:20:25,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:20:25,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:20:25,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (1/1) ... [2020-10-29 08:20:25,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (1/1) ... [2020-10-29 08:20:25,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (1/1) ... [2020-10-29 08:20:25,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (1/1) ... [2020-10-29 08:20:25,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (1/1) ... [2020-10-29 08:20:25,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (1/1) ... [2020-10-29 08:20:25,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (1/1) ... [2020-10-29 08:20:25,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:20:25,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:20:25,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:20:25,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:20:25,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:20:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:20:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:20:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:20:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:20:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:20:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:20:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:20:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:20:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:20:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:20:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:20:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:20:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:20:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:20:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:20:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:20:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:20:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:20:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:20:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:20:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:20:37,539 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:20:37,540 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:20:37,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:20:37 BoogieIcfgContainer [2020-10-29 08:20:37,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:20:37,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:20:37,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:20:37,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:20:37,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:20:23" (1/3) ... [2020-10-29 08:20:37,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133974b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:20:37, skipping insertion in model container [2020-10-29 08:20:37,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:20:25" (2/3) ... [2020-10-29 08:20:37,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133974b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:20:37, skipping insertion in model container [2020-10-29 08:20:37,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:20:37" (3/3) ... [2020-10-29 08:20:37,557 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label40.c [2020-10-29 08:20:37,572 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:20:37,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:20:37,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:20:37,655 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:20:37,655 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:20:37,655 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:20:37,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:20:37,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:20:37,656 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:20:37,656 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:20:37,656 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:20:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:20:37,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 08:20:37,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:37,716 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] [2020-10-29 08:20:37,717 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:37,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1120270787, now seen corresponding path program 1 times [2020-10-29 08:20:37,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:37,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562303735] [2020-10-29 08:20:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:38,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:38,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 08:20:38,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:38,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-29 08:20:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:38,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:20:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:20:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 08:20:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 08:20:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:38,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:38,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:38,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:38,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:20:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:38,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:20:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:20:38,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562303735] [2020-10-29 08:20:38,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:20:38,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:20:38,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112602842] [2020-10-29 08:20:38,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:20:38,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:20:38,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:20:38,775 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:20:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:51,361 INFO L93 Difference]: Finished difference Result 1694 states and 3089 transitions. [2020-10-29 08:20:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:20:51,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-29 08:20:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:51,395 INFO L225 Difference]: With dead ends: 1694 [2020-10-29 08:20:51,396 INFO L226 Difference]: Without dead ends: 1010 [2020-10-29 08:20:51,407 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 [2020-10-29 08:20:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-29 08:20:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 998. [2020-10-29 08:20:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-10-29 08:20:51,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1492 transitions. [2020-10-29 08:20:51,577 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1492 transitions. Word has length 29 [2020-10-29 08:20:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:51,578 INFO L481 AbstractCegarLoop]: Abstraction has 998 states and 1492 transitions. [2020-10-29 08:20:51,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:20:51,578 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1492 transitions. [2020-10-29 08:20:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 08:20:51,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:51,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:51,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:20:51,584 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:51,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:51,585 INFO L82 PathProgramCache]: Analyzing trace with hash -171274025, now seen corresponding path program 1 times [2020-10-29 08:20:51,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:51,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524169538] [2020-10-29 08:20:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:52,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:52,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 08:20:52,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:52,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-29 08:20:52,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:52,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:20:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 08:20:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:52,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:52,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:52,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:52,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:20:52,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:52,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:20:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:20:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:52,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:52,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:20:52,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:52,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 08:20:52,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:52,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:20:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:20:52,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524169538] [2020-10-29 08:20:52,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:20:52,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:20:52,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042730779] [2020-10-29 08:20:52,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:20:52,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:52,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:20:52,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:20:52,550 INFO L87 Difference]: Start difference. First operand 998 states and 1492 transitions. Second operand 5 states. [2020-10-29 08:21:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:06,984 INFO L93 Difference]: Finished difference Result 2900 states and 4368 transitions. [2020-10-29 08:21:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:21:06,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-29 08:21:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:07,006 INFO L225 Difference]: With dead ends: 2900 [2020-10-29 08:21:07,007 INFO L226 Difference]: Without dead ends: 1908 [2020-10-29 08:21:07,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:21:07,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-29 08:21:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1895. [2020-10-29 08:21:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2020-10-29 08:21:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2575 transitions. [2020-10-29 08:21:07,092 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2575 transitions. Word has length 103 [2020-10-29 08:21:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:07,093 INFO L481 AbstractCegarLoop]: Abstraction has 1895 states and 2575 transitions. [2020-10-29 08:21:07,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:21:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2575 transitions. [2020-10-29 08:21:07,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 08:21:07,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:07,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:21:07,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:21:07,099 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:07,099 INFO L82 PathProgramCache]: Analyzing trace with hash 601814634, now seen corresponding path program 1 times [2020-10-29 08:21:07,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:07,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832486612] [2020-10-29 08:21:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:10,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:10,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 08:21:10,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:21:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2856 [2020-10-29 08:21:10,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:10,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:21:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:21:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:21:10,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:21:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:10,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:10,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:10,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:21:10,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:10,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:21:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 08:21:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:21:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-29 08:21:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:10,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:21:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:21:10,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832486612] [2020-10-29 08:21:10,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:21:10,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:21:10,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51534775] [2020-10-29 08:21:10,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:21:10,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:10,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:21:10,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:21:10,836 INFO L87 Difference]: Start difference. First operand 1895 states and 2575 transitions. Second operand 7 states. [2020-10-29 08:21:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:27,910 INFO L93 Difference]: Finished difference Result 3834 states and 5544 transitions. [2020-10-29 08:21:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:21:27,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-29 08:21:27,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:27,926 INFO L225 Difference]: With dead ends: 3834 [2020-10-29 08:21:27,926 INFO L226 Difference]: Without dead ends: 1945 [2020-10-29 08:21:27,932 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 [2020-10-29 08:21:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-10-29 08:21:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1914. [2020-10-29 08:21:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2020-10-29 08:21:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2619 transitions. [2020-10-29 08:21:28,002 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2619 transitions. Word has length 125 [2020-10-29 08:21:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:28,003 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2619 transitions. [2020-10-29 08:21:28,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:21:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2619 transitions. [2020-10-29 08:21:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 08:21:28,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:28,008 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:21:28,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:21:28,009 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:28,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:28,009 INFO L82 PathProgramCache]: Analyzing trace with hash -821597582, now seen corresponding path program 1 times [2020-10-29 08:21:28,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:28,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006849190] [2020-10-29 08:21:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:33,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 08:21:33,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:21:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 08:21:33,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:33,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:21:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:21:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 08:21:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:33,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:33,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:33,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:33,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:21:33,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:33,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:21:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:21:33,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:21:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 08:21:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:33,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:21:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:21:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 08:21:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:33,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:33,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:33,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:21:33,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:33,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 08:21:33,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:33,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:33,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:33,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:33,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:21:33,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:21:33,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006849190] [2020-10-29 08:21:33,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:33,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:21:33,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578997217] [2020-10-29 08:21:33,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:21:33,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:21:33,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:21:33,987 INFO L87 Difference]: Start difference. First operand 1914 states and 2619 transitions. Second operand 7 states. [2020-10-29 08:21:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:50,658 INFO L93 Difference]: Finished difference Result 4910 states and 7035 transitions. [2020-10-29 08:21:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:21:50,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-29 08:21:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:50,685 INFO L225 Difference]: With dead ends: 4910 [2020-10-29 08:21:50,685 INFO L226 Difference]: Without dead ends: 2970 [2020-10-29 08:21:50,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:21:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-10-29 08:21:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2403. [2020-10-29 08:21:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-10-29 08:21:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2941 transitions. [2020-10-29 08:21:50,833 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2941 transitions. Word has length 176 [2020-10-29 08:21:50,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:50,835 INFO L481 AbstractCegarLoop]: Abstraction has 2403 states and 2941 transitions. [2020-10-29 08:21:50,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:21:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2941 transitions. [2020-10-29 08:21:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 08:21:50,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:50,842 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:21:50,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:21:50,842 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1028714791, now seen corresponding path program 1 times [2020-10-29 08:21:50,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:50,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564563901] [2020-10-29 08:21:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:50,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:52,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:52,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 08:21:52,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:21:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-29 08:21:52,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:52,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:21:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:21:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:52,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:52,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:21:52,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:52,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:21:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:21:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:21:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 08:21:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:52,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:21:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:21:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:52,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:21:52,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 08:21:52,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:52,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:21:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:21:53,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564563901] [2020-10-29 08:21:53,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:53,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:21:53,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417902876] [2020-10-29 08:21:53,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:21:53,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:53,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:21:53,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:21:53,211 INFO L87 Difference]: Start difference. First operand 2403 states and 2941 transitions. Second operand 7 states. [2020-10-29 08:22:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:09,001 INFO L93 Difference]: Finished difference Result 6246 states and 7955 transitions. [2020-10-29 08:22:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:22:09,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-29 08:22:09,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:09,027 INFO L225 Difference]: With dead ends: 6246 [2020-10-29 08:22:09,027 INFO L226 Difference]: Without dead ends: 3849 [2020-10-29 08:22:09,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:22:09,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2020-10-29 08:22:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3826. [2020-10-29 08:22:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3826 states. [2020-10-29 08:22:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 4697 transitions. [2020-10-29 08:22:09,151 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 4697 transitions. Word has length 189 [2020-10-29 08:22:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:09,152 INFO L481 AbstractCegarLoop]: Abstraction has 3826 states and 4697 transitions. [2020-10-29 08:22:09,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:22:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 4697 transitions. [2020-10-29 08:22:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 08:22:09,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:09,155 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:22:09,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:22:09,156 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash -375854581, now seen corresponding path program 1 times [2020-10-29 08:22:09,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:09,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159009736] [2020-10-29 08:22:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:11,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:14,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:14,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 08:22:14,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:22:14,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4839 [2020-10-29 08:22:14,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:14,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:22:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:22:14,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:14,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:14,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:14,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:14,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:14,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:22:14,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:14,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:14,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:14,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:22:14,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 08:22:14,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:14,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:22:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:22:14,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:22:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:22:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:14,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:14,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:22:14,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 08:22:14,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:14,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:22:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 111 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:22:15,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159009736] [2020-10-29 08:22:15,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:15,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:22:15,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68619895] [2020-10-29 08:22:15,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:22:15,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:15,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:22:15,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:22:15,148 INFO L87 Difference]: Start difference. First operand 3826 states and 4697 transitions. Second operand 10 states. [2020-10-29 08:22:15,398 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:22:16,291 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:22:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:39,332 INFO L93 Difference]: Finished difference Result 11541 states and 15377 transitions. [2020-10-29 08:22:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:22:39,334 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 191 [2020-10-29 08:22:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:39,375 INFO L225 Difference]: With dead ends: 11541 [2020-10-29 08:22:39,375 INFO L226 Difference]: Without dead ends: 7266 [2020-10-29 08:22:39,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-29 08:22:39,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7266 states. [2020-10-29 08:22:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7266 to 7037. [2020-10-29 08:22:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2020-10-29 08:22:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 8291 transitions. [2020-10-29 08:22:39,704 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 8291 transitions. Word has length 191 [2020-10-29 08:22:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:39,705 INFO L481 AbstractCegarLoop]: Abstraction has 7037 states and 8291 transitions. [2020-10-29 08:22:39,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:22:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 8291 transitions. [2020-10-29 08:22:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 08:22:39,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:39,708 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:22:39,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:22:39,709 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:39,709 INFO L82 PathProgramCache]: Analyzing trace with hash -689137835, now seen corresponding path program 1 times [2020-10-29 08:22:39,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:39,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116671745] [2020-10-29 08:22:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:39,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:40,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:44,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:22:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:22:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 08:22:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:44,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:22:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 08:22:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:44,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:44,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:44,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:22:44,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:44,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:22:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:22:44,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:22:44,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:45,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:45,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:22:45,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 08:22:45,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:45,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:22:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:22:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:45,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:22:45,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:22:45,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 08:22:45,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:45,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:22:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:22:45,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116671745] [2020-10-29 08:22:45,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:45,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:22:45,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573307740] [2020-10-29 08:22:45,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:22:45,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:45,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:22:45,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:22:45,499 INFO L87 Difference]: Start difference. First operand 7037 states and 8291 transitions. Second operand 5 states. [2020-10-29 08:23:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:01,078 INFO L93 Difference]: Finished difference Result 14080 states and 16989 transitions. [2020-10-29 08:23:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:23:01,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-29 08:23:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:01,113 INFO L225 Difference]: With dead ends: 14080 [2020-10-29 08:23:01,113 INFO L226 Difference]: Without dead ends: 7484 [2020-10-29 08:23:01,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:23:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7484 states. [2020-10-29 08:23:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7484 to 7037. [2020-10-29 08:23:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2020-10-29 08:23:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 8287 transitions. [2020-10-29 08:23:01,319 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 8287 transitions. Word has length 202 [2020-10-29 08:23:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:01,320 INFO L481 AbstractCegarLoop]: Abstraction has 7037 states and 8287 transitions. [2020-10-29 08:23:01,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:23:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 8287 transitions. [2020-10-29 08:23:01,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-29 08:23:01,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:01,326 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:01,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:23:01,326 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:01,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:01,327 INFO L82 PathProgramCache]: Analyzing trace with hash -145776624, now seen corresponding path program 1 times [2020-10-29 08:23:01,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:01,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095629692] [2020-10-29 08:23:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:02,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:04,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:05,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:05,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-29 08:23:05,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:23:05,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3643 [2020-10-29 08:23:05,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:05,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 08:23:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-29 08:23:05,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:05,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:05,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:05,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:05,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:23:05,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:05,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:05,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:05,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:05,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:05,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 08:23:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:05,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:23:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:23:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:05,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:05,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:05,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:23:05,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 08:23:05,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:05,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:23:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:06,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:23:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:06,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:06,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:23:06,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 08:23:06,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:06,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:23:06,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 79 proven. 197 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 08:23:06,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095629692] [2020-10-29 08:23:06,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:06,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:23:06,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731385704] [2020-10-29 08:23:06,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:23:06,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:06,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:23:06,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:23:06,481 INFO L87 Difference]: Start difference. First operand 7037 states and 8287 transitions. Second operand 10 states. [2020-10-29 08:23:06,648 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:23:12,839 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:23:25,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:25,557 INFO L93 Difference]: Finished difference Result 16962 states and 21418 transitions. [2020-10-29 08:23:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 08:23:25,560 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 273 [2020-10-29 08:23:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:25,619 INFO L225 Difference]: With dead ends: 16962 [2020-10-29 08:23:25,619 INFO L226 Difference]: Without dead ends: 9917 [2020-10-29 08:23:25,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:23:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9917 states. [2020-10-29 08:23:25,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9917 to 7049. [2020-10-29 08:23:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7049 states. [2020-10-29 08:23:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 8306 transitions. [2020-10-29 08:23:25,899 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 8306 transitions. Word has length 273 [2020-10-29 08:23:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:25,900 INFO L481 AbstractCegarLoop]: Abstraction has 7049 states and 8306 transitions. [2020-10-29 08:23:25,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:23:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 8306 transitions. [2020-10-29 08:23:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 08:23:25,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:25,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:25,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:23:25,908 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:25,908 INFO L82 PathProgramCache]: Analyzing trace with hash 650030607, now seen corresponding path program 1 times [2020-10-29 08:23:25,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:25,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266719735] [2020-10-29 08:23:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:31,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:31,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 08:23:31,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:23:31,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 08:23:31,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:31,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:23:31,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 08:23:31,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:31,314 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:23:31,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:31,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:31,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:31,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:23:31,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:31,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:31,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:31,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:31,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:31,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:31,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 08:23:31,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:31,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:31,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:31,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:31,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:23:31,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:31,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:31,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:23:31,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 08:23:31,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:23:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 08:23:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:32,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:32,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:23:32,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:32,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:23:32,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:32,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:23:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 151 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:23:32,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266719735] [2020-10-29 08:23:32,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:32,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:23:32,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081546458] [2020-10-29 08:23:32,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:23:32,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:32,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:23:32,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:23:32,591 INFO L87 Difference]: Start difference. First operand 7049 states and 8306 transitions. Second operand 8 states. [2020-10-29 08:23:33,680 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 08:23:39,902 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 08:23:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:49,890 INFO L93 Difference]: Finished difference Result 14653 states and 17349 transitions. [2020-10-29 08:23:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:23:49,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 296 [2020-10-29 08:23:49,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:49,920 INFO L225 Difference]: With dead ends: 14653 [2020-10-29 08:23:49,921 INFO L226 Difference]: Without dead ends: 8045 [2020-10-29 08:23:49,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:23:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2020-10-29 08:23:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 7971. [2020-10-29 08:23:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7971 states. [2020-10-29 08:23:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 9362 transitions. [2020-10-29 08:23:50,179 INFO L78 Accepts]: Start accepts. Automaton has 7971 states and 9362 transitions. Word has length 296 [2020-10-29 08:23:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:50,180 INFO L481 AbstractCegarLoop]: Abstraction has 7971 states and 9362 transitions. [2020-10-29 08:23:50,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:23:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7971 states and 9362 transitions. [2020-10-29 08:23:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-29 08:23:50,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:50,187 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:23:50,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:23:50,187 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:50,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:50,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1147250287, now seen corresponding path program 1 times [2020-10-29 08:23:50,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:50,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437517055] [2020-10-29 08:23:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:55,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:55,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-29 08:23:55,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:23:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 08:23:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:55,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:23:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 08:23:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:55,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:55,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:55,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:55,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:55,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:23:55,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:55,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:55,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:23:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:55,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:55,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:55,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:23:55,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:55,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 08:23:55,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:55,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:55,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:23:55,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:56,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-29 08:23:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:56,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:56,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:23:56,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:23:56,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:56,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:56,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:23:56,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:56,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 71 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 08:23:56,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437517055] [2020-10-29 08:23:56,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:56,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 08:23:56,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218748929] [2020-10-29 08:23:56,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:23:56,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:56,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:23:56,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:23:56,441 INFO L87 Difference]: Start difference. First operand 7971 states and 9362 transitions. Second operand 10 states. [2020-10-29 08:23:56,646 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:23:57,774 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 71