/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/Problem13_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:09:18,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:09:18,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:09:18,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:09:18,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:09:18,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:09:18,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:09:18,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:09:18,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:09:18,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:09:18,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:09:18,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:09:18,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:09:18,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:09:18,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:09:18,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:09:18,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:09:18,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:09:18,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:09:18,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:09:18,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:09:18,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:09:18,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:09:18,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:09:18,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:09:18,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:09:18,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:09:18,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:09:18,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:09:18,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:09:18,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:09:18,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:09:18,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:09:18,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:09:18,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:09:18,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:09:18,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:09:18,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:09:18,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:09:18,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:09:18,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:09:18,540 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 23:09:18,569 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:09:18,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:09:18,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:09:18,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:09:18,572 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:09:18,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:09:18,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:09:18,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:09:18,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:09:18,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:09:18,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:09:18,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:09:18,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:09:18,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:09:18,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:09:18,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:09:18,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:09:18,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:09:18,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:09:18,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:09:18,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:09:18,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:09:18,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:09:18,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:09:18,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:09:18,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:09:18,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:09:18,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:09:18,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:09:18,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:09:18,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:09:19,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:09:19,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:09:19,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:09:19,017 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:09:19,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2020-10-26 23:09:19,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7506dc10e/2ffde0a05f024544acfbac3c8ba63dfa/FLAGa735ee9c7 [2020-10-26 23:09:20,334 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:09:20,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2020-10-26 23:09:20,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7506dc10e/2ffde0a05f024544acfbac3c8ba63dfa/FLAGa735ee9c7 [2020-10-26 23:09:20,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7506dc10e/2ffde0a05f024544acfbac3c8ba63dfa [2020-10-26 23:09:20,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:09:20,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:09:20,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:09:20,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:09:20,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:09:20,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:09:20" (1/1) ... [2020-10-26 23:09:20,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b5e920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:20, skipping insertion in model container [2020-10-26 23:09:20,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:09:20" (1/1) ... [2020-10-26 23:09:20,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:09:20,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:09:22,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:09:22,574 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:09:23,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:09:23,382 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:09:23,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23 WrapperNode [2020-10-26 23:09:23,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:09:23,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:09:23,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:09:23,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:09:23,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (1/1) ... [2020-10-26 23:09:23,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (1/1) ... [2020-10-26 23:09:23,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (1/1) ... [2020-10-26 23:09:23,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (1/1) ... [2020-10-26 23:09:23,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (1/1) ... [2020-10-26 23:09:23,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (1/1) ... [2020-10-26 23:09:23,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (1/1) ... [2020-10-26 23:09:23,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:09:23,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:09:23,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:09:23,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:09:23,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (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 23:09:24,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:09:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:09:24,062 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:09:24,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:09:24,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:09:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 23:09:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 23:09:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:09:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:09:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:09:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 23:09:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 23:09:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:09:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:09:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:09:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:09:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:09:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:09:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:09:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:09:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:09:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:09:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:09:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:09:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:09:34,906 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:09:34,907 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:09:34,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:09:34 BoogieIcfgContainer [2020-10-26 23:09:34,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:09:34,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:09:34,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:09:34,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:09:34,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:09:20" (1/3) ... [2020-10-26 23:09:34,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d1fd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:09:34, skipping insertion in model container [2020-10-26 23:09:34,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:09:23" (2/3) ... [2020-10-26 23:09:34,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d1fd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:09:34, skipping insertion in model container [2020-10-26 23:09:34,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:09:34" (3/3) ... [2020-10-26 23:09:34,928 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label25.c [2020-10-26 23:09:34,943 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:09:34,951 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:09:34,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:09:35,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:09:35,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:09:35,023 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:09:35,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:09:35,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:09:35,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:09:35,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:09:35,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:09:35,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-26 23:09:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 23:09:35,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:09:35,094 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] [2020-10-26 23:09:35,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:09:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:09:35,106 INFO L82 PathProgramCache]: Analyzing trace with hash 115769242, now seen corresponding path program 1 times [2020-10-26 23:09:35,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:09:35,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334695876] [2020-10-26 23:09:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:09:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:35,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:35,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-26 23:09:35,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-26 23:09:35,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:09:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:09:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 23:09:35,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:09:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:09:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:36,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:36,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:09:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:09:36,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:09:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:09:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:09:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:09:36,252 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 23:09:36,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334695876] [2020-10-26 23:09:36,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:09:36,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:09:36,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94781688] [2020-10-26 23:09:36,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:09:36,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:09:36,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:09:36,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:09:36,290 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-26 23:09:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:09:54,322 INFO L93 Difference]: Finished difference Result 3209 states and 5919 transitions. [2020-10-26 23:09:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:09:54,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-26 23:09:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:09:54,359 INFO L225 Difference]: With dead ends: 3209 [2020-10-26 23:09:54,359 INFO L226 Difference]: Without dead ends: 2007 [2020-10-26 23:09:54,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:09:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-26 23:09:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1921. [2020-10-26 23:09:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2020-10-26 23:09:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3312 transitions. [2020-10-26 23:09:54,564 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3312 transitions. Word has length 30 [2020-10-26 23:09:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:09:54,564 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3312 transitions. [2020-10-26 23:09:54,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:09:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3312 transitions. [2020-10-26 23:09:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-26 23:09:54,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:09:54,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:09:54,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:09:54,571 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:09:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:09:54,572 INFO L82 PathProgramCache]: Analyzing trace with hash 186084158, now seen corresponding path program 1 times [2020-10-26 23:09:54,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:09:54,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746968307] [2020-10-26 23:09:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:09:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:54,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:09:57,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:09:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2416 [2020-10-26 23:09:57,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:09:57,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:09:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:09:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:09:57,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:09:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:57,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:57,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:09:57,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:09:57,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:09:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:09:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:09:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-26 23:09:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:09:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:09:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:09:57,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:09:57,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:09:57,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:09:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 23:09:57,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:09:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:09:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:09:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:09:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:09:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:09:57,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746968307] [2020-10-26 23:09:57,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:09:57,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:09:57,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302056476] [2020-10-26 23:09:57,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:09:57,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:09:57,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:09:57,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:09:57,577 INFO L87 Difference]: Start difference. First operand 1921 states and 3312 transitions. Second operand 7 states. [2020-10-26 23:10:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:10:22,794 INFO L93 Difference]: Finished difference Result 5775 states and 9992 transitions. [2020-10-26 23:10:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:10:22,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-26 23:10:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:10:22,833 INFO L225 Difference]: With dead ends: 5775 [2020-10-26 23:10:22,914 INFO L226 Difference]: Without dead ends: 3860 [2020-10-26 23:10:22,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:10:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2020-10-26 23:10:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3766. [2020-10-26 23:10:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-10-26 23:10:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5894 transitions. [2020-10-26 23:10:23,059 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5894 transitions. Word has length 99 [2020-10-26 23:10:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:10:23,060 INFO L481 AbstractCegarLoop]: Abstraction has 3766 states and 5894 transitions. [2020-10-26 23:10:23,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:10:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5894 transitions. [2020-10-26 23:10:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-26 23:10:23,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:10:23,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:10:23,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:10:23,064 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:10:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:10:23,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1532067334, now seen corresponding path program 1 times [2020-10-26 23:10:23,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:10:23,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922317732] [2020-10-26 23:10:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:10:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:23,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:23,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:23,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:10:23,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:10:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-26 23:10:23,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:10:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:10:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:10:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:10:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:24,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:24,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:10:24,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:10:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:10:24,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:10:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:10:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:10:24,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:24,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:10:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:24,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:24,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 23:10:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:10:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 23:10:24,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:10:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:10:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 23:10:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:10:24,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922317732] [2020-10-26 23:10:24,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:10:24,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:10:24,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17590362] [2020-10-26 23:10:24,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:10:24,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:10:24,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:10:24,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:10:24,491 INFO L87 Difference]: Start difference. First operand 3766 states and 5894 transitions. Second operand 7 states. [2020-10-26 23:10:54,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:10:54,862 INFO L93 Difference]: Finished difference Result 11179 states and 17915 transitions. [2020-10-26 23:10:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:10:54,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-26 23:10:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:10:54,924 INFO L225 Difference]: With dead ends: 11179 [2020-10-26 23:10:54,924 INFO L226 Difference]: Without dead ends: 7419 [2020-10-26 23:10:54,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:10:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7419 states. [2020-10-26 23:10:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7419 to 7272. [2020-10-26 23:10:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7272 states. [2020-10-26 23:10:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7272 states to 7272 states and 10568 transitions. [2020-10-26 23:10:55,205 INFO L78 Accepts]: Start accepts. Automaton has 7272 states and 10568 transitions. Word has length 101 [2020-10-26 23:10:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:10:55,205 INFO L481 AbstractCegarLoop]: Abstraction has 7272 states and 10568 transitions. [2020-10-26 23:10:55,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:10:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7272 states and 10568 transitions. [2020-10-26 23:10:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-26 23:10:55,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:10:55,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:10:55,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:10:55,220 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:10:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:10:55,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1554619586, now seen corresponding path program 1 times [2020-10-26 23:10:55,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:10:55,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665275485] [2020-10-26 23:10:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:10:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:55,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:56,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:56,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:10:56,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:10:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-26 23:10:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:10:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:10:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:10:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:10:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:56,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:56,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:10:56,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:10:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:10:56,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:10:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:10:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:10:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:10:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:10:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:10:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:10:56,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:10:56,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:10:56,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:10:56,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-26 23:10:56,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:10:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:10:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:10:56,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:10:56,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:10:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:10:57,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665275485] [2020-10-26 23:10:57,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:10:57,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:10:57,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278642377] [2020-10-26 23:10:57,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:10:57,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:10:57,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:10:57,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:10:57,026 INFO L87 Difference]: Start difference. First operand 7272 states and 10568 transitions. Second operand 6 states. [2020-10-26 23:11:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:11:17,878 INFO L93 Difference]: Finished difference Result 18019 states and 25987 transitions. [2020-10-26 23:11:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 23:11:17,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-26 23:11:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:11:17,941 INFO L225 Difference]: With dead ends: 18019 [2020-10-26 23:11:17,941 INFO L226 Difference]: Without dead ends: 10753 [2020-10-26 23:11:17,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:11:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10753 states. [2020-10-26 23:11:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10753 to 10650. [2020-10-26 23:11:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10650 states. [2020-10-26 23:11:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 14632 transitions. [2020-10-26 23:11:18,330 INFO L78 Accepts]: Start accepts. Automaton has 10650 states and 14632 transitions. Word has length 106 [2020-10-26 23:11:18,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:11:18,331 INFO L481 AbstractCegarLoop]: Abstraction has 10650 states and 14632 transitions. [2020-10-26 23:11:18,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:11:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states and 14632 transitions. [2020-10-26 23:11:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-26 23:11:18,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:11:18,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:11:18,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:11:18,333 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:11:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:11:18,335 INFO L82 PathProgramCache]: Analyzing trace with hash 612115566, now seen corresponding path program 1 times [2020-10-26 23:11:18,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:11:18,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451358381] [2020-10-26 23:11:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:11:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:18,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:19,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:19,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:11:19,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:11:19,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1484 [2020-10-26 23:11:19,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:11:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:11:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:11:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:19,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:11:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:19,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:20,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:20,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:11:20,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:11:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:11:20,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:11:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:11:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:11:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:11:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:20,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:20,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:20,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:20,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 23:11:20,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:11:20,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-26 23:11:20,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:11:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:11:20,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:11:20,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:11:20,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451358381] [2020-10-26 23:11:20,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:11:20,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:11:20,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997200992] [2020-10-26 23:11:20,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:11:20,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:11:20,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:11:20,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:11:20,495 INFO L87 Difference]: Start difference. First operand 10650 states and 14632 transitions. Second operand 6 states. [2020-10-26 23:11:44,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:11:44,007 INFO L93 Difference]: Finished difference Result 30951 states and 44547 transitions. [2020-10-26 23:11:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:11:44,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-26 23:11:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:11:44,096 INFO L225 Difference]: With dead ends: 30951 [2020-10-26 23:11:44,096 INFO L226 Difference]: Without dead ends: 20307 [2020-10-26 23:11:44,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:11:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20307 states. [2020-10-26 23:11:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20307 to 20223. [2020-10-26 23:11:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20223 states. [2020-10-26 23:11:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20223 states to 20223 states and 26384 transitions. [2020-10-26 23:11:44,649 INFO L78 Accepts]: Start accepts. Automaton has 20223 states and 26384 transitions. Word has length 107 [2020-10-26 23:11:44,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:11:44,649 INFO L481 AbstractCegarLoop]: Abstraction has 20223 states and 26384 transitions. [2020-10-26 23:11:44,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:11:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20223 states and 26384 transitions. [2020-10-26 23:11:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-26 23:11:44,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:11:44,654 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:11:44,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:11:44,654 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:11:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:11:44,655 INFO L82 PathProgramCache]: Analyzing trace with hash 890658298, now seen corresponding path program 1 times [2020-10-26 23:11:44,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:11:44,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866437121] [2020-10-26 23:11:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:11:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:44,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:49,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-26 23:11:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:11:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4863 [2020-10-26 23:11:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:11:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:11:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:11:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:11:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:49,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:49,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:11:49,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:11:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:11:49,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:11:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:11:49,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:11:49,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:11:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:49,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:49,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:11:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:11:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:11:49,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:11:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:11:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:11:49,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 23:11:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:11:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:11:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:11:50,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 23:11:50,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:11:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:11:50,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:11:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:11:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-26 23:11:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:11:50,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:11:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:11:50,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866437121] [2020-10-26 23:11:50,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:11:50,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:11:50,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926365067] [2020-10-26 23:11:50,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:11:50,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:11:50,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:11:50,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:11:50,318 INFO L87 Difference]: Start difference. First operand 20223 states and 26384 transitions. Second operand 7 states. [2020-10-26 23:12:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:12:13,275 INFO L93 Difference]: Finished difference Result 40147 states and 53055 transitions. [2020-10-26 23:12:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:12:13,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-26 23:12:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:12:13,352 INFO L225 Difference]: With dead ends: 40147 [2020-10-26 23:12:13,352 INFO L226 Difference]: Without dead ends: 20733 [2020-10-26 23:12:13,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:12:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20733 states. [2020-10-26 23:12:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20733 to 20473. [2020-10-26 23:12:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20473 states. [2020-10-26 23:12:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20473 states to 20473 states and 26987 transitions. [2020-10-26 23:12:13,894 INFO L78 Accepts]: Start accepts. Automaton has 20473 states and 26987 transitions. Word has length 200 [2020-10-26 23:12:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:12:13,895 INFO L481 AbstractCegarLoop]: Abstraction has 20473 states and 26987 transitions. [2020-10-26 23:12:13,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:12:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 20473 states and 26987 transitions. [2020-10-26 23:12:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-26 23:12:13,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:12:13,898 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:12:13,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:12:13,899 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:12:13,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:12:13,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1313225713, now seen corresponding path program 1 times [2020-10-26 23:12:13,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:12:13,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341204493] [2020-10-26 23:12:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:12:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:12:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:14,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:14,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:12:14,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-26 23:12:14,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:12:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-26 23:12:14,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:12:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:12:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:12:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:12:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:12:15,091 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:12:15,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:12:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:12:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:15,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:12:15,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:12:15,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:12:15,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:12:15,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:12:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:12:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:12:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:12:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:12:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:12:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:12:15,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:15,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:12:15,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:12:15,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:12:15,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:12:15,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:12:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:12:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:12:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:12:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:12:15,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:12:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:12:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:12:15,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:12:15,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 23:12:15,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:12:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 23:12:15,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:12:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:12:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:12:15,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:12:15,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:12:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:12:15,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341204493] [2020-10-26 23:12:15,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:12:15,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:12:15,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173891923] [2020-10-26 23:12:15,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:12:15,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:12:15,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:12:15,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:12:15,679 INFO L87 Difference]: Start difference. First operand 20473 states and 26987 transitions. Second operand 7 states. [2020-10-26 23:12:16,812 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:12:21,231 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:13:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:13:00,086 INFO L93 Difference]: Finished difference Result 50236 states and 70661 transitions. [2020-10-26 23:13:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:13:00,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-26 23:13:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:13:00,213 INFO L225 Difference]: With dead ends: 50236 [2020-10-26 23:13:00,214 INFO L226 Difference]: Without dead ends: 30572 [2020-10-26 23:13:00,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:13:00,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30572 states. [2020-10-26 23:13:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30572 to 30224. [2020-10-26 23:13:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30224 states. [2020-10-26 23:13:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30224 states to 30224 states and 39675 transitions. [2020-10-26 23:13:01,036 INFO L78 Accepts]: Start accepts. Automaton has 30224 states and 39675 transitions. Word has length 207 [2020-10-26 23:13:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:13:01,037 INFO L481 AbstractCegarLoop]: Abstraction has 30224 states and 39675 transitions. [2020-10-26 23:13:01,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:13:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 30224 states and 39675 transitions. [2020-10-26 23:13:01,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-26 23:13:01,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:13:01,042 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:13:01,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:13:01,043 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:13:01,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:13:01,044 INFO L82 PathProgramCache]: Analyzing trace with hash -914568215, now seen corresponding path program 1 times [2020-10-26 23:13:01,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:13:01,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230328815] [2020-10-26 23:13:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:13:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:13:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:02,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:04,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:13:04,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-26 23:13:04,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:13:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3625 [2020-10-26 23:13:04,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:13:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:13:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:13:04,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-26 23:13:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:13:05,056 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:13:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:13:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:13:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:05,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:13:05,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:13:05,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:13:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:13:05,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:13:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:13:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:13:05,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:13:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:13:05,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:13:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:13:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:05,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:13:05,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:13:05,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:13:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-26 23:13:05,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:13:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:13:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:13:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:13:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:13:05,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 23:13:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:13:06,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:13:06,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:13:06,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:13:06,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:13:06,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-26 23:13:06,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:13:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:13:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:13:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:13:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:13:06,659 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-10-26 23:13:06,878 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-26 23:13:07,100 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2020-10-26 23:13:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 18 proven. 115 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:13:07,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230328815] [2020-10-26 23:13:07,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:13:07,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:13:07,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622561922] [2020-10-26 23:13:07,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:13:07,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:13:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:13:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:13:07,863 INFO L87 Difference]: Start difference. First operand 30224 states and 39675 transitions. Second operand 12 states. [2020-10-26 23:13:08,164 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-26 23:13:08,953 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 76