/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem05_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:50:12,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:50:12,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:50:12,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:50:12,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:50:12,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:50:12,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:50:12,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:50:12,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:50:12,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:50:12,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:50:12,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:50:12,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:50:12,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:50:12,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:50:12,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:50:12,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:50:12,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:50:12,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:50:12,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:50:12,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:50:12,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:50:12,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:50:12,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:50:12,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:50:12,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:50:12,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:50:12,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:50:12,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:50:12,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:50:12,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:50:12,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:50:12,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:50:12,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:50:12,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:50:12,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:50:12,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:50:12,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:50:12,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:50:12,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:50:12,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:50:12,546 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 [2020-10-28 10:50:12,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:50:12,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:50:12,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:50:12,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:50:12,606 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:50:12,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:50:12,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:50:12,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:50:12,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:50:12,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:50:12,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:50:12,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:50:12,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:50:12,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:50:12,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:50:12,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:50:12,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:50:12,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:50:12,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:50:12,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:50:12,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:50:12,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:50:12,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:50:12,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:50:12,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:50:12,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:50:12,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:50:12,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:50:12,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:50:12,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:50:13,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:50:13,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:50:13,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:50:13,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:50:13,117 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:50:13,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label45.c [2020-10-28 10:50:13,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ab2f1c59/4aeb239a566c4e7a8abff665216b736b/FLAGef7eef142 [2020-10-28 10:50:14,560 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:50:14,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label45.c [2020-10-28 10:50:14,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ab2f1c59/4aeb239a566c4e7a8abff665216b736b/FLAGef7eef142 [2020-10-28 10:50:14,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ab2f1c59/4aeb239a566c4e7a8abff665216b736b [2020-10-28 10:50:14,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:50:14,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:50:14,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:50:14,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:50:14,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:50:14,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:50:14" (1/1) ... [2020-10-28 10:50:14,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d1b95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:14, skipping insertion in model container [2020-10-28 10:50:14,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:50:14" (1/1) ... [2020-10-28 10:50:14,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:50:15,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:50:17,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:50:17,402 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:50:18,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:50:18,814 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:50:18,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18 WrapperNode [2020-10-28 10:50:18,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:50:18,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:50:18,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:50:18,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:50:18,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (1/1) ... [2020-10-28 10:50:18,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (1/1) ... [2020-10-28 10:50:18,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (1/1) ... [2020-10-28 10:50:18,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (1/1) ... [2020-10-28 10:50:19,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (1/1) ... [2020-10-28 10:50:19,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (1/1) ... [2020-10-28 10:50:19,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (1/1) ... [2020-10-28 10:50:19,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:50:19,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:50:19,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:50:19,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:50:19,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (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 [2020-10-28 10:50:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:50:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:50:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:50:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:50:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:50:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:50:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:50:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:50:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:50:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:50:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:50:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:50:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:50:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:50:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:50:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:50:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:50:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:50:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:50:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:50:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:50:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:50:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:50:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:50:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:50:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:50:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:50:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:50:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:50:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:50:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:50:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:50:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:50:29,502 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:50:29,503 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:50:29,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:29 BoogieIcfgContainer [2020-10-28 10:50:29,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:50:29,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:50:29,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:50:29,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:50:29,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:50:14" (1/3) ... [2020-10-28 10:50:29,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8f0901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:50:29, skipping insertion in model container [2020-10-28 10:50:29,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:50:18" (2/3) ... [2020-10-28 10:50:29,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8f0901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:50:29, skipping insertion in model container [2020-10-28 10:50:29,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:50:29" (3/3) ... [2020-10-28 10:50:29,523 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45.c [2020-10-28 10:50:29,538 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:50:29,545 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:50:29,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:50:29,620 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:50:29,621 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:50:29,621 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:50:29,621 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:50:29,621 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:50:29,621 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:50:29,621 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:50:29,622 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:50:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:50:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2020-10-28 10:50:29,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:50:29,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:50:29,857 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:50:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:50:29,869 INFO L82 PathProgramCache]: Analyzing trace with hash -821923961, now seen corresponding path program 1 times [2020-10-28 10:50:29,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:50:29,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679218500] [2020-10-28 10:50:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:50:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:31,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:36,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:36,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1720 [2020-10-28 10:50:36,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:36,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5205 [2020-10-28 10:50:36,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:36,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:50:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:50:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1711 [2020-10-28 10:50:36,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:50:38,038 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:50:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:50:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:38,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:50:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 10:50:38,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:38,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:50:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:50:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:50:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:50:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:50:40,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679218500] [2020-10-28 10:50:40,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:50:40,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:50:40,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282223408] [2020-10-28 10:50:40,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:50:40,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:50:40,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:50:40,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:50:40,611 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:50:40,836 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 10:51:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:51:01,105 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-28 10:51:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:51:01,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1696 [2020-10-28 10:51:01,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:51:01,177 INFO L225 Difference]: With dead ends: 6315 [2020-10-28 10:51:01,177 INFO L226 Difference]: Without dead ends: 4025 [2020-10-28 10:51:01,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:51:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-28 10:51:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-28 10:51:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-28 10:51:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-28 10:51:01,465 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1696 [2020-10-28 10:51:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:51:01,472 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-28 10:51:01,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:51:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-28 10:51:01,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2020-10-28 10:51:01,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:51:01,616 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:51:01,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:51:01,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:51:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:51:01,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2084713859, now seen corresponding path program 1 times [2020-10-28 10:51:01,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:51:01,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308033247] [2020-10-28 10:51:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:51:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:06,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:06,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1731 [2020-10-28 10:51:06,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:51:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-28 10:51:06,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:06,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:51:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:51:06,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:51:06,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:51:08,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:51:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:08,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:51:08,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:51:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:51:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:08,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:51:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:51:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:51:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:51:08,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:51:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:08,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:08,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:08,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:51:08,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:51:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:51:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:08,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:08,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:51:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:51:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:51:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:51:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:51:09,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308033247] [2020-10-28 10:51:09,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:51:09,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:51:09,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817134797] [2020-10-28 10:51:09,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:51:09,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:51:09,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:51:09,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:51:09,276 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 7 states. [2020-10-28 10:51:37,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:51:37,869 INFO L93 Difference]: Finished difference Result 11940 states and 19454 transitions. [2020-10-28 10:51:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:51:37,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1705 [2020-10-28 10:51:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:51:37,923 INFO L225 Difference]: With dead ends: 11940 [2020-10-28 10:51:37,923 INFO L226 Difference]: Without dead ends: 7948 [2020-10-28 10:51:37,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:51:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7948 states. [2020-10-28 10:51:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7948 to 7711. [2020-10-28 10:51:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7711 states. [2020-10-28 10:51:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 11168 transitions. [2020-10-28 10:51:38,240 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 11168 transitions. Word has length 1705 [2020-10-28 10:51:38,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:51:38,241 INFO L481 AbstractCegarLoop]: Abstraction has 7711 states and 11168 transitions. [2020-10-28 10:51:38,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:51:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 11168 transitions. [2020-10-28 10:51:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-28 10:51:38,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:51:38,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:51:38,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:51:38,287 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:51:38,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:51:38,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1396024447, now seen corresponding path program 1 times [2020-10-28 10:51:38,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:51:38,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928129575] [2020-10-28 10:51:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:51:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:43,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:43,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-28 10:51:43,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:51:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5265 [2020-10-28 10:51:43,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:43,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:51:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:51:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:51:43,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:51:44,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:51:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:44,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:44,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:51:44,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:51:44,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:51:44,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:44,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:51:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:51:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:51:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:51:44,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:51:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:44,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:51:44,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:51:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:51:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:44,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:51:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:51:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:51:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:51:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:51:46,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928129575] [2020-10-28 10:51:46,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:51:46,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:51:46,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024796043] [2020-10-28 10:51:46,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:51:46,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:51:46,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:51:46,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:51:46,017 INFO L87 Difference]: Start difference. First operand 7711 states and 11168 transitions. Second operand 7 states. [2020-10-28 10:52:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:52:11,757 INFO L93 Difference]: Finished difference Result 19573 states and 27885 transitions. [2020-10-28 10:52:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:52:11,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1707 [2020-10-28 10:52:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:52:11,825 INFO L225 Difference]: With dead ends: 19573 [2020-10-28 10:52:11,826 INFO L226 Difference]: Without dead ends: 11868 [2020-10-28 10:52:11,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:52:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11868 states. [2020-10-28 10:52:12,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11868 to 11690. [2020-10-28 10:52:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11690 states. [2020-10-28 10:52:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11690 states to 11690 states and 15865 transitions. [2020-10-28 10:52:12,154 INFO L78 Accepts]: Start accepts. Automaton has 11690 states and 15865 transitions. Word has length 1707 [2020-10-28 10:52:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:52:12,155 INFO L481 AbstractCegarLoop]: Abstraction has 11690 states and 15865 transitions. [2020-10-28 10:52:12,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:52:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11690 states and 15865 transitions. [2020-10-28 10:52:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2020-10-28 10:52:12,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:52:12,214 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:52:12,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:52:12,215 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:52:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:52:12,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1986940424, now seen corresponding path program 1 times [2020-10-28 10:52:12,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:52:12,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310870715] [2020-10-28 10:52:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:52:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:13,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:17,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1744 [2020-10-28 10:52:17,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:52:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 10:52:17,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:17,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:52:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:52:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:52:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:52:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:52:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:18,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:18,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:52:18,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:18,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:52:18,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:18,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:18,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:52:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:52:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:52:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:52:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:52:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:18,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:52:18,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 10:52:18,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:18,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:52:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:52:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:52:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:52:19,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310870715] [2020-10-28 10:52:19,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:52:19,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:52:19,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015799137] [2020-10-28 10:52:19,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:52:19,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:52:19,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:52:19,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:52:19,558 INFO L87 Difference]: Start difference. First operand 11690 states and 15865 transitions. Second operand 7 states. [2020-10-28 10:52:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:52:46,844 INFO L93 Difference]: Finished difference Result 29603 states and 39831 transitions. [2020-10-28 10:52:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:52:46,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1718 [2020-10-28 10:52:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:52:46,906 INFO L225 Difference]: With dead ends: 29603 [2020-10-28 10:52:46,907 INFO L226 Difference]: Without dead ends: 17919 [2020-10-28 10:52:46,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:52:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17919 states. [2020-10-28 10:52:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17919 to 17402. [2020-10-28 10:52:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17402 states. [2020-10-28 10:52:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17402 states to 17402 states and 22228 transitions. [2020-10-28 10:52:47,396 INFO L78 Accepts]: Start accepts. Automaton has 17402 states and 22228 transitions. Word has length 1718 [2020-10-28 10:52:47,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:52:47,396 INFO L481 AbstractCegarLoop]: Abstraction has 17402 states and 22228 transitions. [2020-10-28 10:52:47,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:52:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17402 states and 22228 transitions. [2020-10-28 10:52:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1734 [2020-10-28 10:52:47,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:52:47,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:52:47,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:52:47,562 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:52:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:52:47,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1520067747, now seen corresponding path program 1 times [2020-10-28 10:52:47,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:52:47,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209674759] [2020-10-28 10:52:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:52:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:49,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:52,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1759 [2020-10-28 10:52:52,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:52:52,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 10:52:52,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:52,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:52:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:52:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 10:52:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:52:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:53,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:53,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:52:53,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:52:53,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:53,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:52:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:52:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:52:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:52:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:52:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:53,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:53,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 10:52:53,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:53,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 10:52:53,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:53,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:52:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:52:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 10:52:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:52:54,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209674759] [2020-10-28 10:52:54,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:52:54,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:52:54,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159385592] [2020-10-28 10:52:54,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:52:54,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:52:54,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:52:54,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:52:54,590 INFO L87 Difference]: Start difference. First operand 17402 states and 22228 transitions. Second operand 7 states. [2020-10-28 10:53:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:53:20,102 INFO L93 Difference]: Finished difference Result 52469 states and 70204 transitions. [2020-10-28 10:53:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:53:20,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1733 [2020-10-28 10:53:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:53:20,230 INFO L225 Difference]: With dead ends: 52469 [2020-10-28 10:53:20,230 INFO L226 Difference]: Without dead ends: 35073 [2020-10-28 10:53:20,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:53:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35073 states. [2020-10-28 10:53:21,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35073 to 34496. [2020-10-28 10:53:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34496 states. [2020-10-28 10:53:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34496 states to 34496 states and 43448 transitions. [2020-10-28 10:53:21,144 INFO L78 Accepts]: Start accepts. Automaton has 34496 states and 43448 transitions. Word has length 1733 [2020-10-28 10:53:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:53:21,144 INFO L481 AbstractCegarLoop]: Abstraction has 34496 states and 43448 transitions. [2020-10-28 10:53:21,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:53:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 34496 states and 43448 transitions. [2020-10-28 10:53:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1832 [2020-10-28 10:53:21,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:53:21,263 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:53:21,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:53:21,264 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:53:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:53:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1289950898, now seen corresponding path program 1 times [2020-10-28 10:53:21,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:53:21,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33814277] [2020-10-28 10:53:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:53:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:26,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:26,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1859 [2020-10-28 10:53:26,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:53:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-10-28 10:53:26,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:26,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:53:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-28 10:53:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:53:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:53:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:53:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:27,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:27,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:53:27,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:53:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:53:27,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:27,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:53:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:53:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:53:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:53:27,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:53:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:27,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:27,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:53:27,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:53:27,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 10:53:27,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:27,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:27,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:53:27,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:53:27,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:53:27,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:53:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 10:53:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:27,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:27,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:53:27,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:53:27,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 10:53:27,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:27,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:53:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:53:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:53:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:53:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:53:29,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33814277] [2020-10-28 10:53:29,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:53:29,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:53:29,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475439368] [2020-10-28 10:53:29,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:53:29,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:53:29,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:53:29,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:53:29,246 INFO L87 Difference]: Start difference. First operand 34496 states and 43448 transitions. Second operand 7 states.