/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:42:02,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:42:02,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:42:02,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:42:02,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:42:02,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:42:02,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:42:02,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:42:02,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:42:02,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:42:02,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:42:02,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:42:02,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:42:02,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:42:02,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:42:02,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:42:02,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:42:02,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:42:02,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:42:02,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:42:02,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:42:02,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:42:02,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:42:02,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:42:02,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:42:02,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:42:02,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:42:02,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:42:02,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:42:02,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:42:02,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:42:02,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:42:02,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:42:02,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:42:02,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:42:02,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:42:02,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:42:02,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:42:02,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:42:02,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:42:02,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:42:02,490 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 [2020-10-27 17:42:02,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:42:02,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:42:02,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:42:02,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:42:02,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:42:02,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:42:02,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:42:02,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:42:02,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:42:02,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:42:02,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:42:02,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:42:02,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:42:02,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:42:02,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:42:02,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:42:02,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:42:02,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:42:02,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:42:02,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:42:02,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:42:02,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:42:02,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:42:02,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:42:02,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:42:02,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:42:02,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:42:02,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:42:02,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:42:02,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:42:03,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:42:03,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:42:03,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:42:03,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:42:03,080 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:42:03,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-27 17:42:03,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93160cdcf/0e6352abfe4641a2bdac6bc135987ef7/FLAG54b658cdf [2020-10-27 17:42:04,239 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:42:04,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-27 17:42:04,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93160cdcf/0e6352abfe4641a2bdac6bc135987ef7/FLAG54b658cdf [2020-10-27 17:42:04,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93160cdcf/0e6352abfe4641a2bdac6bc135987ef7 [2020-10-27 17:42:04,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:42:04,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:42:04,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:42:04,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:42:04,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:42:04,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:04" (1/1) ... [2020-10-27 17:42:04,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4117af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:04, skipping insertion in model container [2020-10-27 17:42:04,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:04" (1/1) ... [2020-10-27 17:42:04,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:42:04,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:42:06,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:42:06,252 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:42:07,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:42:07,094 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:42:07,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07 WrapperNode [2020-10-27 17:42:07,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:42:07,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:42:07,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:42:07,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:42:07,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (1/1) ... [2020-10-27 17:42:07,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (1/1) ... [2020-10-27 17:42:07,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (1/1) ... [2020-10-27 17:42:07,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (1/1) ... [2020-10-27 17:42:07,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (1/1) ... [2020-10-27 17:42:07,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (1/1) ... [2020-10-27 17:42:07,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (1/1) ... [2020-10-27 17:42:07,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:42:07,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:42:07,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:42:07,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:42:07,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (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 [2020-10-27 17:42:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:42:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:42:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:42:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:42:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:42:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:42:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:42:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:42:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:42:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:42:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:42:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:42:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:42:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:42:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:42:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:42:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:42:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:42:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:42:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:42:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:42:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:42:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:42:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:42:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:42:13,119 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:42:13,119 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:42:13,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:13 BoogieIcfgContainer [2020-10-27 17:42:13,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:42:13,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:42:13,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:42:13,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:42:13,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:42:04" (1/3) ... [2020-10-27 17:42:13,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0e8918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:13, skipping insertion in model container [2020-10-27 17:42:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:07" (2/3) ... [2020-10-27 17:42:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0e8918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:13, skipping insertion in model container [2020-10-27 17:42:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:13" (3/3) ... [2020-10-27 17:42:13,139 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2020-10-27 17:42:13,152 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:42:13,159 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:42:13,173 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:42:13,210 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:42:13,211 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:42:13,211 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:42:13,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:42:13,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:42:13,211 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:42:13,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:42:13,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:42:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:42:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 17:42:13,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:13,265 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] [2020-10-27 17:42:13,265 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:13,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:13,273 INFO L82 PathProgramCache]: Analyzing trace with hash 174221132, now seen corresponding path program 1 times [2020-10-27 17:42:13,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:13,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482404606] [2020-10-27 17:42:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:14,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:14,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 17:42:14,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-27 17:42:14,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:42:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:42:14,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 17:42:14,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:42:14,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:14,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:14,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:14,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:14,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 17:42:14,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:14,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:42:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:42:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:14,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482404606] [2020-10-27 17:42:14,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:42:14,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:42:14,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179537948] [2020-10-27 17:42:14,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:42:14,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:14,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:42:14,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:42:14,544 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:42:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:26,312 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-27 17:42:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:26,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-27 17:42:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:26,354 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:42:26,355 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:42:26,366 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 [2020-10-27 17:42:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:42:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-27 17:42:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-27 17:42:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-27 17:42:26,533 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 60 [2020-10-27 17:42:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:26,534 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-27 17:42:26,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:42:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-27 17:42:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 17:42:26,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:26,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:42:26,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:42:26,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:26,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -816694262, now seen corresponding path program 1 times [2020-10-27 17:42:26,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:26,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199979142] [2020-10-27 17:42:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:28,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:28,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 17:42:28,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:42:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-10-27 17:42:28,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:42:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 17:42:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:42:28,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:28,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:28,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 17:42:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:28,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:28,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:42:28,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:28,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 17:42:28,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:42:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:42:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:28,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199979142] [2020-10-27 17:42:28,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:28,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:42:28,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767697647] [2020-10-27 17:42:28,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:42:28,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:28,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:42:28,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:42:28,846 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 5 states. [2020-10-27 17:42:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:41,713 INFO L93 Difference]: Finished difference Result 4675 states and 7283 transitions. [2020-10-27 17:42:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:41,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-27 17:42:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:41,739 INFO L225 Difference]: With dead ends: 4675 [2020-10-27 17:42:41,739 INFO L226 Difference]: Without dead ends: 3125 [2020-10-27 17:42:41,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:42:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-27 17:42:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3118. [2020-10-27 17:42:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3118 states. [2020-10-27 17:42:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4282 transitions. [2020-10-27 17:42:41,855 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4282 transitions. Word has length 135 [2020-10-27 17:42:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:41,859 INFO L481 AbstractCegarLoop]: Abstraction has 3118 states and 4282 transitions. [2020-10-27 17:42:41,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:42:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4282 transitions. [2020-10-27 17:42:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 17:42:41,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:41,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:42:41,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:42:41,871 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:41,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:41,872 INFO L82 PathProgramCache]: Analyzing trace with hash 426561854, now seen corresponding path program 1 times [2020-10-27 17:42:41,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:41,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941167595] [2020-10-27 17:42:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:43,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:43,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 17:42:43,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:42:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-27 17:42:43,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 17:42:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 17:42:43,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:43,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:43,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:43,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:43,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:43,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:42:43,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:43,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:43,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:42:43,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:43,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 17:42:43,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 17:42:43,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:43,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941167595] [2020-10-27 17:42:43,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:43,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:42:43,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668293012] [2020-10-27 17:42:43,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:42:43,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:43,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:42:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:42:43,577 INFO L87 Difference]: Start difference. First operand 3118 states and 4282 transitions. Second operand 6 states. [2020-10-27 17:43:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:03,106 INFO L93 Difference]: Finished difference Result 12449 states and 17526 transitions. [2020-10-27 17:43:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:43:03,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-10-27 17:43:03,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:03,172 INFO L225 Difference]: With dead ends: 12449 [2020-10-27 17:43:03,173 INFO L226 Difference]: Without dead ends: 9337 [2020-10-27 17:43:03,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:43:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2020-10-27 17:43:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 9333. [2020-10-27 17:43:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9333 states. [2020-10-27 17:43:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 12200 transitions. [2020-10-27 17:43:03,539 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 12200 transitions. Word has length 141 [2020-10-27 17:43:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:03,543 INFO L481 AbstractCegarLoop]: Abstraction has 9333 states and 12200 transitions. [2020-10-27 17:43:03,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:43:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 12200 transitions. [2020-10-27 17:43:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 17:43:03,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:03,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:43:03,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:43:03,560 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:03,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:03,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1445845980, now seen corresponding path program 1 times [2020-10-27 17:43:03,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:03,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240173789] [2020-10-27 17:43:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:07,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:07,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 17:43:07,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:07,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3607 [2020-10-27 17:43:07,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-27 17:43:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 17:43:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:07,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:07,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:07,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:43:07,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:07,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:07,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:07,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:43:07,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 17:43:07,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:43:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 17:43:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:07,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:07,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:43:07,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 17:43:07,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:07,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:07,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:07,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:43:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 17:43:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 17:43:07,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240173789] [2020-10-27 17:43:07,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:07,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:07,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644643961] [2020-10-27 17:43:07,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:07,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:07,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:07,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:07,687 INFO L87 Difference]: Start difference. First operand 9333 states and 12200 transitions. Second operand 5 states. [2020-10-27 17:43:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:24,598 INFO L93 Difference]: Finished difference Result 27961 states and 37157 transitions. [2020-10-27 17:43:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:24,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-27 17:43:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:24,686 INFO L225 Difference]: With dead ends: 27961 [2020-10-27 17:43:24,687 INFO L226 Difference]: Without dead ends: 18634 [2020-10-27 17:43:24,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:24,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2020-10-27 17:43:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 18630. [2020-10-27 17:43:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18630 states. [2020-10-27 17:43:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18630 states to 18630 states and 23361 transitions. [2020-10-27 17:43:25,204 INFO L78 Accepts]: Start accepts. Automaton has 18630 states and 23361 transitions. Word has length 218 [2020-10-27 17:43:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:25,205 INFO L481 AbstractCegarLoop]: Abstraction has 18630 states and 23361 transitions. [2020-10-27 17:43:25,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:25,205 INFO L276 IsEmpty]: Start isEmpty. Operand 18630 states and 23361 transitions. [2020-10-27 17:43:25,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-27 17:43:25,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:25,212 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:43:25,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:43:25,213 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:25,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1028318662, now seen corresponding path program 1 times [2020-10-27 17:43:25,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:25,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577798194] [2020-10-27 17:43:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:25,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:30,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:30,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 17:43:30,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:43:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 17:43:30,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-27 17:43:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 17:43:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:30,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:30,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:30,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:30,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:30,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:43:30,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:30,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:30,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:43:30,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 17:43:30,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:43:30,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 17:43:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:30,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:30,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:30,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:43:30,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:30,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 17:43:30,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:43:30,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:43:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 17:43:30,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577798194] [2020-10-27 17:43:30,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:30,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:30,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456682617] [2020-10-27 17:43:30,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:30,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:30,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:30,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:30,954 INFO L87 Difference]: Start difference. First operand 18630 states and 23361 transitions. Second operand 5 states. [2020-10-27 17:43:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:46,765 INFO L93 Difference]: Finished difference Result 46540 states and 59656 transitions. [2020-10-27 17:43:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:46,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-27 17:43:46,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:46,904 INFO L225 Difference]: With dead ends: 46540 [2020-10-27 17:43:46,904 INFO L226 Difference]: Without dead ends: 27916 [2020-10-27 17:43:46,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27916 states. [2020-10-27 17:43:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27916 to 27913. [2020-10-27 17:43:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27913 states. [2020-10-27 17:43:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27913 states to 27913 states and 34580 transitions. [2020-10-27 17:43:47,698 INFO L78 Accepts]: Start accepts. Automaton has 27913 states and 34580 transitions. Word has length 239 [2020-10-27 17:43:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:47,699 INFO L481 AbstractCegarLoop]: Abstraction has 27913 states and 34580 transitions. [2020-10-27 17:43:47,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:47,699 INFO L276 IsEmpty]: Start isEmpty. Operand 27913 states and 34580 transitions. [2020-10-27 17:43:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-27 17:43:47,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:47,710 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:43:47,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:43:47,711 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:47,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:47,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1367335698, now seen corresponding path program 1 times [2020-10-27 17:43:47,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:47,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114653271] [2020-10-27 17:43:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:47,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 17:43:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-27 17:43:49,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-27 17:43:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 17:43:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:49,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:49,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:49,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:43:49,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:49,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:49,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:49,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:43:49,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:43:49,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:49,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:43:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:43:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:49,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 17:43:49,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 17:43:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 17:43:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:43:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:43:49,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114653271] [2020-10-27 17:43:49,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:49,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:49,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336867984] [2020-10-27 17:43:49,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:49,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:49,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:49,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:49,894 INFO L87 Difference]: Start difference. First operand 27913 states and 34580 transitions. Second operand 5 states. [2020-10-27 17:44:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:06,564 INFO L93 Difference]: Finished difference Result 62022 states and 79318 transitions. [2020-10-27 17:44:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:06,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-27 17:44:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:06,706 INFO L225 Difference]: With dead ends: 62022 [2020-10-27 17:44:06,706 INFO L226 Difference]: Without dead ends: 34882 [2020-10-27 17:44:06,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34882 states. [2020-10-27 17:44:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34882 to 34882. [2020-10-27 17:44:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34882 states. [2020-10-27 17:44:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34882 states to 34882 states and 43185 transitions. [2020-10-27 17:44:07,612 INFO L78 Accepts]: Start accepts. Automaton has 34882 states and 43185 transitions. Word has length 259 [2020-10-27 17:44:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:07,613 INFO L481 AbstractCegarLoop]: Abstraction has 34882 states and 43185 transitions. [2020-10-27 17:44:07,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:07,613 INFO L276 IsEmpty]: Start isEmpty. Operand 34882 states and 43185 transitions. [2020-10-27 17:44:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-27 17:44:07,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:07,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:44:07,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:44:07,632 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:07,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:07,633 INFO L82 PathProgramCache]: Analyzing trace with hash -124949496, now seen corresponding path program 1 times [2020-10-27 17:44:07,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:07,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030264739] [2020-10-27 17:44:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:07,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:09,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:09,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-27 17:44:09,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:44:09,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1688 [2020-10-27 17:44:09,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-27 17:44:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 17:44:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:09,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:09,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:09,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:09,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:44:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:09,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:09,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 17:44:09,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 17:44:09,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:09,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:09,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-27 17:44:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:09,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:09,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 17:44:09,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 17:44:09,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 17:44:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 17:44:10,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030264739] [2020-10-27 17:44:10,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:10,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:10,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063421616] [2020-10-27 17:44:10,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:10,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:10,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:10,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:10,243 INFO L87 Difference]: Start difference. First operand 34882 states and 43185 transitions. Second operand 5 states. [2020-10-27 17:44:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:29,079 INFO L93 Difference]: Finished difference Result 97611 states and 124360 transitions. [2020-10-27 17:44:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:29,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-27 17:44:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:29,279 INFO L225 Difference]: With dead ends: 97611 [2020-10-27 17:44:29,279 INFO L226 Difference]: Without dead ends: 63502 [2020-10-27 17:44:29,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:29,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63502 states. [2020-10-27 17:44:31,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63502 to 63502. [2020-10-27 17:44:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63502 states. [2020-10-27 17:44:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63502 states to 63502 states and 78933 transitions. [2020-10-27 17:44:31,548 INFO L78 Accepts]: Start accepts. Automaton has 63502 states and 78933 transitions. Word has length 320 [2020-10-27 17:44:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:31,554 INFO L481 AbstractCegarLoop]: Abstraction has 63502 states and 78933 transitions. [2020-10-27 17:44:31,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 63502 states and 78933 transitions. [2020-10-27 17:44:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 17:44:31,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:31,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:44:31,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:44:31,581 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:31,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:31,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2085704782, now seen corresponding path program 1 times [2020-10-27 17:44:31,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:31,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555461503] [2020-10-27 17:44:31,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:34,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:36,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:36,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 17:44:36,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:44:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 17:44:36,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 279 [2020-10-27 17:44:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 17:44:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:44:36,877 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:44:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:36,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:36,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:44:36,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:36,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:36,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:44:36,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 17:44:36,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:36,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:44:37,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:44:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:37,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:37,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 17:44:37,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 17:44:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:44:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 17:44:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:37,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:37,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 17:44:37,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 17:44:37,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 17:44:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:44:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 159 proven. 3 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-27 17:44:37,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555461503] [2020-10-27 17:44:37,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:37,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:37,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462428958] [2020-10-27 17:44:37,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:37,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:37,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:37,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:37,470 INFO L87 Difference]: Start difference. First operand 63502 states and 78933 transitions. Second operand 5 states. [2020-10-27 17:44:37,617 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:44:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:56,249 INFO L93 Difference]: Finished difference Result 157967 states and 203279 transitions. [2020-10-27 17:44:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:56,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-27 17:44:56,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:56,798 INFO L225 Difference]: With dead ends: 157967 [2020-10-27 17:44:56,798 INFO L226 Difference]: Without dead ends: 95238 [2020-10-27 17:44:57,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95238 states. [2020-10-27 17:44:59,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95238 to 95238. [2020-10-27 17:44:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95238 states. [2020-10-27 17:45:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95238 states to 95238 states and 120299 transitions. [2020-10-27 17:45:00,098 INFO L78 Accepts]: Start accepts. Automaton has 95238 states and 120299 transitions. Word has length 325 [2020-10-27 17:45:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:00,099 INFO L481 AbstractCegarLoop]: Abstraction has 95238 states and 120299 transitions. [2020-10-27 17:45:00,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 95238 states and 120299 transitions. [2020-10-27 17:45:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-27 17:45:00,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:00,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:45:00,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:45:00,134 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:00,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1861556016, now seen corresponding path program 1 times [2020-10-27 17:45:00,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:00,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36346462] [2020-10-27 17:45:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:00,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:04,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:04,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-27 17:45:04,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:45:04,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4506 [2020-10-27 17:45:04,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 314 [2020-10-27 17:45:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 17:45:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:04,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:04,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:04,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:04,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:04,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:04,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:45:04,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:04,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:04,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:04,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:04,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:05,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:05,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 17:45:05,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:05,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 17:45:05,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 17:45:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:05,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:05,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:05,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 17:45:05,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 17:45:05,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 17:45:05,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-27 17:45:05,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36346462] [2020-10-27 17:45:05,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:05,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:05,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898799805] [2020-10-27 17:45:05,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:05,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:05,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:05,484 INFO L87 Difference]: Start difference. First operand 95238 states and 120299 transitions. Second operand 5 states. [2020-10-27 17:45:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:24,411 INFO L93 Difference]: Finished difference Result 215218 states and 279871 transitions. [2020-10-27 17:45:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:24,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-27 17:45:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:25,041 INFO L225 Difference]: With dead ends: 215218 [2020-10-27 17:45:25,041 INFO L226 Difference]: Without dead ends: 120753 [2020-10-27 17:45:25,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120753 states. [2020-10-27 17:45:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120753 to 120753. [2020-10-27 17:45:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120753 states. [2020-10-27 17:45:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120753 states to 120753 states and 153083 transitions. [2020-10-27 17:45:27,960 INFO L78 Accepts]: Start accepts. Automaton has 120753 states and 153083 transitions. Word has length 362 [2020-10-27 17:45:27,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:27,961 INFO L481 AbstractCegarLoop]: Abstraction has 120753 states and 153083 transitions. [2020-10-27 17:45:27,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:27,961 INFO L276 IsEmpty]: Start isEmpty. Operand 120753 states and 153083 transitions. [2020-10-27 17:45:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-27 17:45:28,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:28,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:45:28,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:45:28,031 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash 600209647, now seen corresponding path program 1 times [2020-10-27 17:45:28,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:28,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343830009] [2020-10-27 17:45:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:31,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:31,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:33,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:33,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-27 17:45:33,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:45:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 17:45:33,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 454 [2020-10-27 17:45:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 17:45:33,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:33,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:33,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:33,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:33,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:33,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:45:33,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:33,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:33,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:45:33,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:45:33,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 17:45:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:33,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:33,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-27 17:45:33,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:33,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-27 17:45:33,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:33,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 352 [2020-10-27 17:45:33,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:33,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:45:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:34,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:34,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:34,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:45:34,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 17:45:34,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:45:34,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 17:45:34,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343830009] [2020-10-27 17:45:34,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:34,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:34,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834841032] [2020-10-27 17:45:34,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:34,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:34,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:34,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:34,385 INFO L87 Difference]: Start difference. First operand 120753 states and 153083 transitions. Second operand 5 states.