/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:08:58,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:08:58,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:08:58,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:08:58,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:08:58,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:08:58,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:08:58,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:08:58,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:08:58,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:08:58,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:08:58,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:08:58,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:08:58,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:08:58,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:08:58,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:08:58,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:08:58,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:08:58,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:08:58,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:08:58,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:08:58,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:08:58,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:08:58,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:08:58,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:08:58,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:08:58,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:08:58,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:08:58,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:08:58,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:08:58,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:08:58,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:08:58,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:08:58,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:08:58,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:08:58,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:08:58,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:08:58,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:08:58,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:08:58,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:08:58,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:08:58,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 21:08:58,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:08:58,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:08:58,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:08:58,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:08:58,510 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:08:58,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:08:58,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:08:58,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:08:58,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:08:58,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:08:58,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:08:58,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:08:58,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:08:58,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:08:58,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:08:58,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:08:58,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:08:58,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:08:58,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:08:58,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:08:58,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:08:58,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:08:58,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:08:58,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:08:58,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:08:58,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:08:58,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:08:58,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:08:58,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:08:58,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:08:58,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:08:58,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:08:58,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:08:58,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:08:58,967 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:08:58,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label52.c [2020-10-26 21:08:59,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b775826bf/e747f05f81bb4892b426eeba3f8b7028/FLAG1ab17c3ba [2020-10-26 21:09:00,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:09:00,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label52.c [2020-10-26 21:09:00,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b775826bf/e747f05f81bb4892b426eeba3f8b7028/FLAG1ab17c3ba [2020-10-26 21:09:00,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b775826bf/e747f05f81bb4892b426eeba3f8b7028 [2020-10-26 21:09:00,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:09:00,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:09:00,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:09:00,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:09:00,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:09:00,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:09:00" (1/1) ... [2020-10-26 21:09:00,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e75945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:00, skipping insertion in model container [2020-10-26 21:09:00,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:09:00" (1/1) ... [2020-10-26 21:09:00,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:09:00,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:09:02,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:09:02,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:09:03,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:09:03,239 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:09:03,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03 WrapperNode [2020-10-26 21:09:03,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:09:03,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:09:03,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:09:03,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:09:03,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (1/1) ... [2020-10-26 21:09:03,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (1/1) ... [2020-10-26 21:09:03,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (1/1) ... [2020-10-26 21:09:03,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (1/1) ... [2020-10-26 21:09:03,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (1/1) ... [2020-10-26 21:09:03,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (1/1) ... [2020-10-26 21:09:03,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (1/1) ... [2020-10-26 21:09:03,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:09:03,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:09:03,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:09:03,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:09:03,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:09:03,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:09:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:09:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:09:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:09:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:09:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:09:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:09:03,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:09:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:09:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:09:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:09:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:09:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:09:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:09:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:09:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:09:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:09:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:09:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:09:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:09:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:09:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:09:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:09:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:09:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:09:11,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:09:11,043 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:09:11,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:09:11 BoogieIcfgContainer [2020-10-26 21:09:11,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:09:11,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:09:11,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:09:11,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:09:11,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:09:00" (1/3) ... [2020-10-26 21:09:11,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e664a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:09:11, skipping insertion in model container [2020-10-26 21:09:11,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:03" (2/3) ... [2020-10-26 21:09:11,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e664a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:09:11, skipping insertion in model container [2020-10-26 21:09:11,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:09:11" (3/3) ... [2020-10-26 21:09:11,062 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label52.c [2020-10-26 21:09:11,075 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:09:11,082 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:09:11,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:09:11,141 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:09:11,141 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:09:11,142 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:09:11,142 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:09:11,142 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:09:11,142 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:09:11,142 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:09:11,142 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:09:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:09:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-10-26 21:09:11,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:11,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:11,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:11,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:11,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1877548320, now seen corresponding path program 1 times [2020-10-26 21:09:11,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:11,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508383434] [2020-10-26 21:09:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:17,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:17,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 789 [2020-10-26 21:09:17,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:17,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 21:09:17,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:09:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:09:17,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 780 [2020-10-26 21:09:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:09:17,836 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:09:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:17,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:17,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:17,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:17,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 21:09:17,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:09:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:09:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:09:19,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508383434] [2020-10-26 21:09:19,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:09:19,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:09:19,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359943114] [2020-10-26 21:09:19,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:09:19,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:19,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:09:19,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:09:19,031 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:09:19,289 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:34,287 INFO L93 Difference]: Finished difference Result 2677 states and 5140 transitions. [2020-10-26 21:09:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:09:34,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 773 [2020-10-26 21:09:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:34,336 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:09:34,336 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:09:34,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:09:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:09:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2020-10-26 21:09:34,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-26 21:09:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2781 transitions. [2020-10-26 21:09:34,523 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2781 transitions. Word has length 773 [2020-10-26 21:09:34,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:34,526 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2781 transitions. [2020-10-26 21:09:34,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:09:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2781 transitions. [2020-10-26 21:09:34,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2020-10-26 21:09:34,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:34,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:34,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:09:34,558 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:34,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:34,560 INFO L82 PathProgramCache]: Analyzing trace with hash 250457407, now seen corresponding path program 1 times [2020-10-26 21:09:34,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:34,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365455473] [2020-10-26 21:09:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:39,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:39,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-26 21:09:39,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:09:39,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-26 21:09:39,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:09:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:09:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:09:39,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:09:40,109 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:09:40,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:40,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:40,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:40,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:40,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:09:40,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:40,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:40,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:09:40,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 21:09:40,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:40,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:40,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:09:40,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:09:40,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:09:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:09:40,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365455473] [2020-10-26 21:09:40,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:09:40,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:09:40,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681730595] [2020-10-26 21:09:40,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:09:40,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:40,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:09:40,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:09:40,742 INFO L87 Difference]: Start difference. First operand 1699 states and 2781 transitions. Second operand 7 states. [2020-10-26 21:09:41,007 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:54,400 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:09:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:59,477 INFO L93 Difference]: Finished difference Result 5142 states and 8467 transitions. [2020-10-26 21:09:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:09:59,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 784 [2020-10-26 21:09:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:59,501 INFO L225 Difference]: With dead ends: 5142 [2020-10-26 21:09:59,501 INFO L226 Difference]: Without dead ends: 3449 [2020-10-26 21:09:59,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:09:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2020-10-26 21:09:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3437. [2020-10-26 21:09:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3437 states. [2020-10-26 21:09:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5341 transitions. [2020-10-26 21:09:59,630 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5341 transitions. Word has length 784 [2020-10-26 21:09:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:59,630 INFO L481 AbstractCegarLoop]: Abstraction has 3437 states and 5341 transitions. [2020-10-26 21:09:59,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:09:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5341 transitions. [2020-10-26 21:09:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-10-26 21:09:59,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:59,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:59,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:09:59,666 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:59,667 INFO L82 PathProgramCache]: Analyzing trace with hash 488302200, now seen corresponding path program 1 times [2020-10-26 21:09:59,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:59,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804986404] [2020-10-26 21:09:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:59,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:04,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-26 21:10:04,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:10:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-26 21:10:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:10:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 21:10:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:05,120 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:10:05,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:05,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:05,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:05,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:10:05,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:05,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:05,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:05,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:05,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 21:10:05,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:10:05,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:10:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 21:10:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:05,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:05,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:10:05,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:05,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:10:05,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:10:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 21:10:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:10:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 21:10:05,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804986404] [2020-10-26 21:10:05,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:10:05,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:10:05,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128328191] [2020-10-26 21:10:05,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:10:05,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:05,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:10:05,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:10:05,690 INFO L87 Difference]: Start difference. First operand 3437 states and 5341 transitions. Second operand 7 states. [2020-10-26 21:10:05,953 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:10:10,420 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:10:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:10:26,839 INFO L93 Difference]: Finished difference Result 10570 states and 16793 transitions. [2020-10-26 21:10:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:10:26,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 795 [2020-10-26 21:10:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:10:26,889 INFO L225 Difference]: With dead ends: 10570 [2020-10-26 21:10:26,889 INFO L226 Difference]: Without dead ends: 7139 [2020-10-26 21:10:26,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:10:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7139 states. [2020-10-26 21:10:27,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7139 to 6977. [2020-10-26 21:10:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2020-10-26 21:10:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9849 transitions. [2020-10-26 21:10:27,167 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9849 transitions. Word has length 795 [2020-10-26 21:10:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:10:27,167 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 9849 transitions. [2020-10-26 21:10:27,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:10:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9849 transitions. [2020-10-26 21:10:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2020-10-26 21:10:27,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:10:27,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:10:27,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:10:27,203 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:10:27,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:10:27,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1172894420, now seen corresponding path program 1 times [2020-10-26 21:10:27,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:10:27,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838206680] [2020-10-26 21:10:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:10:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:32,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:32,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 881 [2020-10-26 21:10:32,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:10:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5220 [2020-10-26 21:10:32,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 21:10:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 872 [2020-10-26 21:10:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:33,146 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:10:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:33,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:33,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:33,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:10:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:33,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:33,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:33,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:10:33,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:10:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 21:10:33,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:10:33,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:10:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:33,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:33,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 21:10:33,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:10:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-26 21:10:33,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:33,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-26 21:10:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 74 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 21:10:34,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838206680] [2020-10-26 21:10:34,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:10:34,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:10:34,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151577592] [2020-10-26 21:10:34,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:10:34,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:34,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:10:34,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:10:34,626 INFO L87 Difference]: Start difference. First operand 6977 states and 9849 transitions. Second operand 7 states. [2020-10-26 21:10:34,867 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:10:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:10:53,697 INFO L93 Difference]: Finished difference Result 20940 states and 30401 transitions. [2020-10-26 21:10:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 21:10:53,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 861 [2020-10-26 21:10:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:10:53,763 INFO L225 Difference]: With dead ends: 20940 [2020-10-26 21:10:53,763 INFO L226 Difference]: Without dead ends: 13969 [2020-10-26 21:10:53,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:10:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13969 states. [2020-10-26 21:10:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13969 to 13961. [2020-10-26 21:10:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13961 states. [2020-10-26 21:10:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13961 states to 13961 states and 18535 transitions. [2020-10-26 21:10:54,188 INFO L78 Accepts]: Start accepts. Automaton has 13961 states and 18535 transitions. Word has length 861 [2020-10-26 21:10:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:10:54,190 INFO L481 AbstractCegarLoop]: Abstraction has 13961 states and 18535 transitions. [2020-10-26 21:10:54,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:10:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 13961 states and 18535 transitions. [2020-10-26 21:10:54,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-10-26 21:10:54,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:10:54,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:10:54,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:10:54,239 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:10:54,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:10:54,240 INFO L82 PathProgramCache]: Analyzing trace with hash 716398425, now seen corresponding path program 1 times [2020-10-26 21:10:54,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:10:54,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905732308] [2020-10-26 21:10:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:10:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:54,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:59,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:59,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 890 [2020-10-26 21:10:59,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:10:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-26 21:10:59,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:10:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:10:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:10:59,721 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:10:59,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:59,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:59,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:59,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:59,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:10:59,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:59,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:59,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:10:59,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:59,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:10:59,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:10:59,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 21:10:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:59,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:59,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:10:59,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 21:10:59,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:10:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 21:10:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:10:59,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 91 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 21:11:00,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905732308] [2020-10-26 21:11:00,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:11:00,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:11:00,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123974286] [2020-10-26 21:11:00,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:11:00,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:11:00,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:11:00,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:11:00,419 INFO L87 Difference]: Start difference. First operand 13961 states and 18535 transitions. Second operand 7 states. [2020-10-26 21:11:00,666 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:11:04,787 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 21:11:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:11:19,313 INFO L93 Difference]: Finished difference Result 28275 states and 37850 transitions. [2020-10-26 21:11:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:11:19,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 870 [2020-10-26 21:11:19,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:11:19,371 INFO L225 Difference]: With dead ends: 28275 [2020-10-26 21:11:19,371 INFO L226 Difference]: Without dead ends: 14320 [2020-10-26 21:11:19,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:11:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14320 states. [2020-10-26 21:11:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14320 to 14227. [2020-10-26 21:11:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14227 states. [2020-10-26 21:11:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14227 states to 14227 states and 18971 transitions. [2020-10-26 21:11:19,803 INFO L78 Accepts]: Start accepts. Automaton has 14227 states and 18971 transitions. Word has length 870 [2020-10-26 21:11:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:11:19,804 INFO L481 AbstractCegarLoop]: Abstraction has 14227 states and 18971 transitions. [2020-10-26 21:11:19,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:11:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand 14227 states and 18971 transitions. [2020-10-26 21:11:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-10-26 21:11:19,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:11:19,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:11:19,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:11:19,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:11:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:11:19,861 INFO L82 PathProgramCache]: Analyzing trace with hash 483552667, now seen corresponding path program 1 times [2020-10-26 21:11:19,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:11:19,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836554567] [2020-10-26 21:11:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:11:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:21,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:25,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:25,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 902 [2020-10-26 21:11:25,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:11:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-26 21:11:25,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:11:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:11:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 21:11:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:25,365 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:11:25,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:11:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:25,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:25,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:11:25,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:11:25,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:11:25,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:25,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:11:25,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:25,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:11:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:25,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:11:25,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:11:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 21:11:25,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:11:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:11:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:11:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:25,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:11:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:25,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:11:25,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:11:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:11:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:11:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:11:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:25,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 21:11:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:25,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:25,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:11:25,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 21:11:25,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:11:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 21:11:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:11:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 103 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 21:11:26,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836554567] [2020-10-26 21:11:26,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:11:26,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:11:26,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802765399] [2020-10-26 21:11:26,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:11:26,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:11:26,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:11:26,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:11:26,309 INFO L87 Difference]: Start difference. First operand 14227 states and 18971 transitions. Second operand 8 states. [2020-10-26 21:11:26,556 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:11:38,448 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 21:11:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:11:46,356 INFO L93 Difference]: Finished difference Result 32089 states and 43428 transitions. [2020-10-26 21:11:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:11:46,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 880 [2020-10-26 21:11:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:11:46,419 INFO L225 Difference]: With dead ends: 32089 [2020-10-26 21:11:46,419 INFO L226 Difference]: Without dead ends: 17868 [2020-10-26 21:11:46,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:11:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17868 states. [2020-10-26 21:11:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17868 to 17789. [2020-10-26 21:11:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17789 states. [2020-10-26 21:11:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17789 states to 17789 states and 23611 transitions. [2020-10-26 21:11:46,904 INFO L78 Accepts]: Start accepts. Automaton has 17789 states and 23611 transitions. Word has length 880 [2020-10-26 21:11:46,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:11:46,905 INFO L481 AbstractCegarLoop]: Abstraction has 17789 states and 23611 transitions. [2020-10-26 21:11:46,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:11:46,905 INFO L276 IsEmpty]: Start isEmpty. Operand 17789 states and 23611 transitions. [2020-10-26 21:11:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-10-26 21:11:46,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:11:46,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:11:46,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:11:46,963 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:11:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:11:46,963 INFO L82 PathProgramCache]: Analyzing trace with hash -378316982, now seen corresponding path program 1 times [2020-10-26 21:11:46,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:11:46,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348113429] [2020-10-26 21:11:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:11:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:50,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:52,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:52,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-26 21:11:52,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:11:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-26 21:11:52,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:11:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:11:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 21:11:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:52,634 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:11:52,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:11:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:52,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:52,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:11:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:11:52,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:11:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:11:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:11:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:52,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:52,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:11:52,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:11:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 21:11:52,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:11:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:11:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:11:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:11:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:52,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:52,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:52,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:11:52,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:11:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 21:11:52,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:11:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:11:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:11:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 21:11:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:52,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:52,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:11:52,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 21:11:52,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:11:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:11:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 21:11:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 109 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 21:11:53,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348113429] [2020-10-26 21:11:53,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:11:53,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:11:53,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033086780] [2020-10-26 21:11:53,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:11:53,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:11:53,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:11:53,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:11:53,722 INFO L87 Difference]: Start difference. First operand 17789 states and 23611 transitions. Second operand 8 states. [2020-10-26 21:11:53,975 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:12:01,299 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:12:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:12:15,311 INFO L93 Difference]: Finished difference Result 51870 states and 71543 transitions. [2020-10-26 21:12:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:12:15,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 889 [2020-10-26 21:12:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:12:15,411 INFO L225 Difference]: With dead ends: 51870 [2020-10-26 21:12:15,411 INFO L226 Difference]: Without dead ends: 34087 [2020-10-26 21:12:15,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:12:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34087 states. [2020-10-26 21:12:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34087 to 33124. [2020-10-26 21:12:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33124 states. [2020-10-26 21:12:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33124 states to 33124 states and 42086 transitions. [2020-10-26 21:12:16,223 INFO L78 Accepts]: Start accepts. Automaton has 33124 states and 42086 transitions. Word has length 889 [2020-10-26 21:12:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:12:16,224 INFO L481 AbstractCegarLoop]: Abstraction has 33124 states and 42086 transitions. [2020-10-26 21:12:16,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:12:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 33124 states and 42086 transitions. [2020-10-26 21:12:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-26 21:12:16,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:12:16,300 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:12:16,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:12:16,303 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:12:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:12:16,304 INFO L82 PathProgramCache]: Analyzing trace with hash -495051695, now seen corresponding path program 1 times [2020-10-26 21:12:16,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:12:16,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361324533] [2020-10-26 21:12:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:12:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:21,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:21,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1052 [2020-10-26 21:12:21,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:12:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 21:12:21,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:12:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:12:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:21,795 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:12:21,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:12:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:21,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:21,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:21,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:12:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:12:21,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:21,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:12:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:21,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:21,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:12:21,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:12:21,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:12:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:12:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:21,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:12:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:22,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:12:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 21:12:22,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:12:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:12:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:22,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:12:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:22,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:12:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:12:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:12:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 21:12:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:22,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:22,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-26 21:12:22,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 21:12:22,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-26 21:12:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 267 proven. 100 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-26 21:12:22,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361324533] [2020-10-26 21:12:22,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:12:22,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:12:22,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613584805] [2020-10-26 21:12:22,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:12:22,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:12:22,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:12:22,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:12:22,872 INFO L87 Difference]: Start difference. First operand 33124 states and 42086 transitions. Second operand 8 states. [2020-10-26 21:12:23,280 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:12:27,853 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:12:33,288 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 93