/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:55:31,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:55:31,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:55:31,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:55:31,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:55:31,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:55:31,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:55:31,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:55:31,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:55:31,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:55:31,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:55:31,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:55:31,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:55:31,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:55:31,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:55:31,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:55:31,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:55:31,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:55:31,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:55:31,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:55:31,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:55:31,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:55:31,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:55:31,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:55:31,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:55:31,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:55:31,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:55:31,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:55:31,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:55:31,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:55:31,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:55:31,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:55:31,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:55:31,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:55:31,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:55:31,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:55:31,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:55:31,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:55:31,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:55:31,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:55:31,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:55:31,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 22:55:31,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:55:31,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:55:31,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:55:31,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:55:31,832 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:55:31,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:55:31,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:55:31,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:55:31,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:55:31,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:55:31,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:55:31,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:55:31,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:55:31,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:55:31,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:55:31,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:55:31,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:55:31,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:55:31,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:55:31,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:55:31,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:55:31,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:55:31,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:55:31,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:55:31,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:55:31,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:55:31,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:55:31,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:55:31,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:55:31,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:55:32,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:55:32,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:55:32,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:55:32,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:55:32,329 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:55:32,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label35.c [2020-10-26 22:55:32,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f2b54a0/b9a860a2b01d4b7ea73bbd82106c53a6/FLAG02b95aa31 [2020-10-26 22:55:33,305 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:55:33,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label35.c [2020-10-26 22:55:33,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f2b54a0/b9a860a2b01d4b7ea73bbd82106c53a6/FLAG02b95aa31 [2020-10-26 22:55:33,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f2b54a0/b9a860a2b01d4b7ea73bbd82106c53a6 [2020-10-26 22:55:33,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:55:33,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:55:33,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:55:33,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:55:33,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:55:33,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:55:33" (1/1) ... [2020-10-26 22:55:33,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bfd4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:33, skipping insertion in model container [2020-10-26 22:55:33,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:55:33" (1/1) ... [2020-10-26 22:55:33,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:55:33,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:55:35,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:55:35,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:55:36,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:55:36,124 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:55:36,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36 WrapperNode [2020-10-26 22:55:36,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:55:36,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:55:36,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:55:36,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:55:36,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (1/1) ... [2020-10-26 22:55:36,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (1/1) ... [2020-10-26 22:55:36,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (1/1) ... [2020-10-26 22:55:36,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (1/1) ... [2020-10-26 22:55:36,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (1/1) ... [2020-10-26 22:55:36,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (1/1) ... [2020-10-26 22:55:36,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (1/1) ... [2020-10-26 22:55:36,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:55:36,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:55:36,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:55:36,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:55:36,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:55:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:55:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:55:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:55:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:55:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:55:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:55:36,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:55:36,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:55:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:55:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:55:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:55:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:55:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:55:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:55:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:55:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:55:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:55:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:55:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:55:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:55:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:55:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:55:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:55:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:55:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:55:42,382 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:55:42,382 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:55:42,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:55:42 BoogieIcfgContainer [2020-10-26 22:55:42,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:55:42,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:55:42,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:55:42,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:55:42,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:55:33" (1/3) ... [2020-10-26 22:55:42,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609873c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:55:42, skipping insertion in model container [2020-10-26 22:55:42,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:55:36" (2/3) ... [2020-10-26 22:55:42,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609873c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:55:42, skipping insertion in model container [2020-10-26 22:55:42,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:55:42" (3/3) ... [2020-10-26 22:55:42,395 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label35.c [2020-10-26 22:55:42,408 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:55:42,415 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:55:42,429 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:55:42,466 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:55:42,466 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:55:42,466 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:55:42,467 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:55:42,467 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:55:42,467 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:55:42,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:55:42,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:55:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:55:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 22:55:42,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:55:42,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:55:42,514 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:55:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:55:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1638571924, now seen corresponding path program 1 times [2020-10-26 22:55:42,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:55:42,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013593478] [2020-10-26 22:55:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:55:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:43,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:43,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 22:55:43,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-26 22:55:43,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:55:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:55:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 22:55:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:55:43,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:55:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:43,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:43,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:55:43,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:55:43,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:43,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:55:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:55:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:55:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:55:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:55:43,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013593478] [2020-10-26 22:55:43,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:55:43,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:55:43,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573107639] [2020-10-26 22:55:43,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:55:43,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:55:43,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:55:43,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:55:43,387 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:55:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:55:54,523 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 22:55:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:55:54,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-26 22:55:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:55:54,564 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:55:54,565 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:55:54,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:55:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:55:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 22:55:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 22:55:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-26 22:55:54,768 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 14 [2020-10-26 22:55:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:55:54,770 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-26 22:55:54,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:55:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-26 22:55:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-26 22:55:54,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:55:54,775 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] [2020-10-26 22:55:54,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:55:54,776 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:55:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:55:54,777 INFO L82 PathProgramCache]: Analyzing trace with hash -200703106, now seen corresponding path program 1 times [2020-10-26 22:55:54,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:55:54,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144439594] [2020-10-26 22:55:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:55:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:55,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:55,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:55:55,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:55:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-10-26 22:55:55,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:55:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:55:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:55:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:55:55,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:55:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:55,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:55:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 22:55:55,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:55,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:55:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:55:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:55:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:55:55,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:55:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:55:55,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:55:56,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:55:56,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:55:56,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:55:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 22:55:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:55:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:55:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:55:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:55:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:55:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:55:56,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144439594] [2020-10-26 22:55:56,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:55:56,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:55:56,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257714318] [2020-10-26 22:55:56,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:55:56,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:55:56,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:55:56,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:55:56,316 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-26 22:56:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:56:10,851 INFO L93 Difference]: Finished difference Result 4755 states and 8344 transitions. [2020-10-26 22:56:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:56:10,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-26 22:56:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:56:10,879 INFO L225 Difference]: With dead ends: 4755 [2020-10-26 22:56:10,879 INFO L226 Difference]: Without dead ends: 3207 [2020-10-26 22:56:10,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:56:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2020-10-26 22:56:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 3120. [2020-10-26 22:56:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-26 22:56:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4910 transitions. [2020-10-26 22:56:11,001 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4910 transitions. Word has length 83 [2020-10-26 22:56:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:56:11,002 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 4910 transitions. [2020-10-26 22:56:11,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:56:11,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4910 transitions. [2020-10-26 22:56:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-26 22:56:11,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:56:11,006 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] [2020-10-26 22:56:11,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:56:11,006 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:56:11,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:56:11,007 INFO L82 PathProgramCache]: Analyzing trace with hash 382995378, now seen corresponding path program 1 times [2020-10-26 22:56:11,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:56:11,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274382533] [2020-10-26 22:56:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:56:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 22:56:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 22:56:11,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:56:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:56:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 22:56:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:56:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:11,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:11,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:56:11,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:11,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 22:56:11,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:56:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:56:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:56:11,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:11,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:56:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:11,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:11,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:56:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:11,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:56:11,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:56:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:56:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:56:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:56:11,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274382533] [2020-10-26 22:56:11,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:56:11,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:56:11,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319956674] [2020-10-26 22:56:11,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:56:11,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:56:11,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:56:11,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:56:11,534 INFO L87 Difference]: Start difference. First operand 3120 states and 4910 transitions. Second operand 5 states. [2020-10-26 22:56:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:56:24,689 INFO L93 Difference]: Finished difference Result 9382 states and 14869 transitions. [2020-10-26 22:56:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:56:24,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-26 22:56:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:56:24,717 INFO L225 Difference]: With dead ends: 9382 [2020-10-26 22:56:24,718 INFO L226 Difference]: Without dead ends: 4715 [2020-10-26 22:56:24,729 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 [2020-10-26 22:56:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2020-10-26 22:56:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4692. [2020-10-26 22:56:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-26 22:56:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6541 transitions. [2020-10-26 22:56:24,917 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6541 transitions. Word has length 89 [2020-10-26 22:56:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:56:24,918 INFO L481 AbstractCegarLoop]: Abstraction has 4692 states and 6541 transitions. [2020-10-26 22:56:24,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:56:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6541 transitions. [2020-10-26 22:56:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-26 22:56:24,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:56:24,920 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] [2020-10-26 22:56:24,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:56:24,921 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:56:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:56:24,922 INFO L82 PathProgramCache]: Analyzing trace with hash -478230774, now seen corresponding path program 1 times [2020-10-26 22:56:24,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:56:24,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413463610] [2020-10-26 22:56:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:56:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:25,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:25,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:25,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 22:56:25,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:56:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-26 22:56:25,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:56:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:56:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 22:56:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:25,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:56:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:25,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:25,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:56:25,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:56:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:56:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:56:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:56:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:25,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:56:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:25,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:26,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:26,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 22:56:26,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 22:56:26,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:56:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:56:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:56:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:56:26,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413463610] [2020-10-26 22:56:26,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:56:26,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:56:26,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971156613] [2020-10-26 22:56:26,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:56:26,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:56:26,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:56:26,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:56:26,259 INFO L87 Difference]: Start difference. First operand 4692 states and 6541 transitions. Second operand 7 states. [2020-10-26 22:56:40,968 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 22:56:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:56:43,015 INFO L93 Difference]: Finished difference Result 14467 states and 20758 transitions. [2020-10-26 22:56:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:56:43,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-26 22:56:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:56:43,098 INFO L225 Difference]: With dead ends: 14467 [2020-10-26 22:56:43,098 INFO L226 Difference]: Without dead ends: 9781 [2020-10-26 22:56:43,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:56:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9781 states. [2020-10-26 22:56:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9781 to 9570. [2020-10-26 22:56:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9570 states. [2020-10-26 22:56:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 12590 transitions. [2020-10-26 22:56:43,389 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 12590 transitions. Word has length 109 [2020-10-26 22:56:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:56:43,390 INFO L481 AbstractCegarLoop]: Abstraction has 9570 states and 12590 transitions. [2020-10-26 22:56:43,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:56:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 12590 transitions. [2020-10-26 22:56:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-26 22:56:43,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:56:43,392 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] [2020-10-26 22:56:43,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:56:43,393 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:56:43,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:56:43,393 INFO L82 PathProgramCache]: Analyzing trace with hash 907579898, now seen corresponding path program 1 times [2020-10-26 22:56:43,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:56:43,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034681467] [2020-10-26 22:56:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:56:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:44,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:44,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 22:56:44,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:56:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-26 22:56:44,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:56:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:56:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 22:56:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:44,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:56:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:44,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:44,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:56:44,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:56:44,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:56:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:56:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:56:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:56:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:56:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:56:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:56:44,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 22:56:44,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:56:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 22:56:44,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:56:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:56:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:56:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 22:56:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:56:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:56:44,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034681467] [2020-10-26 22:56:44,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:56:44,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:56:44,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097655839] [2020-10-26 22:56:44,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:56:44,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:56:44,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:56:44,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:56:44,811 INFO L87 Difference]: Start difference. First operand 9570 states and 12590 transitions. Second operand 7 states. [2020-10-26 22:57:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:57:04,651 INFO L93 Difference]: Finished difference Result 29358 states and 40303 transitions. [2020-10-26 22:57:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:57:04,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-26 22:57:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:57:04,750 INFO L225 Difference]: With dead ends: 29358 [2020-10-26 22:57:04,750 INFO L226 Difference]: Without dead ends: 19794 [2020-10-26 22:57:04,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:57:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19794 states. [2020-10-26 22:57:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19794 to 19500. [2020-10-26 22:57:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19500 states. [2020-10-26 22:57:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19500 states to 19500 states and 24528 transitions. [2020-10-26 22:57:05,367 INFO L78 Accepts]: Start accepts. Automaton has 19500 states and 24528 transitions. Word has length 117 [2020-10-26 22:57:05,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:57:05,370 INFO L481 AbstractCegarLoop]: Abstraction has 19500 states and 24528 transitions. [2020-10-26 22:57:05,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:57:05,371 INFO L276 IsEmpty]: Start isEmpty. Operand 19500 states and 24528 transitions. [2020-10-26 22:57:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-26 22:57:05,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:57:05,383 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] [2020-10-26 22:57:05,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:57:05,384 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:57:05,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:57:05,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1953717480, now seen corresponding path program 1 times [2020-10-26 22:57:05,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:57:05,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550469026] [2020-10-26 22:57:05,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:57:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:07,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:07,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 22:57:07,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:57:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-26 22:57:07,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:57:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:57:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-26 22:57:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:57:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:07,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:07,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:57:07,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:07,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:57:07,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:57:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:57:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:57:07,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:57:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:08,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:08,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 22:57:08,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:08,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-26 22:57:08,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:57:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:57:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-26 22:57:08,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:57:08,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550469026] [2020-10-26 22:57:08,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:57:08,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 22:57:08,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915533759] [2020-10-26 22:57:08,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:57:08,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:57:08,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:57:08,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:57:08,497 INFO L87 Difference]: Start difference. First operand 19500 states and 24528 transitions. Second operand 8 states. [2020-10-26 22:57:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:57:34,024 INFO L93 Difference]: Finished difference Result 62127 states and 84090 transitions. [2020-10-26 22:57:34,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:57:34,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-10-26 22:57:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:57:34,201 INFO L225 Difference]: With dead ends: 62127 [2020-10-26 22:57:34,201 INFO L226 Difference]: Without dead ends: 42633 [2020-10-26 22:57:34,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:57:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42633 states. [2020-10-26 22:57:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42633 to 42499. [2020-10-26 22:57:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42499 states. [2020-10-26 22:57:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42499 states to 42499 states and 54496 transitions. [2020-10-26 22:57:35,544 INFO L78 Accepts]: Start accepts. Automaton has 42499 states and 54496 transitions. Word has length 212 [2020-10-26 22:57:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:57:35,545 INFO L481 AbstractCegarLoop]: Abstraction has 42499 states and 54496 transitions. [2020-10-26 22:57:35,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:57:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 42499 states and 54496 transitions. [2020-10-26 22:57:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-26 22:57:35,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:57:35,550 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:57:35,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:57:35,551 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:57:35,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:57:35,552 INFO L82 PathProgramCache]: Analyzing trace with hash 765375300, now seen corresponding path program 1 times [2020-10-26 22:57:35,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:57:35,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071954209] [2020-10-26 22:57:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:57:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:37,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:39,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-26 22:57:39,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:57:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3645 [2020-10-26 22:57:39,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:57:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:57:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 22:57:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:57:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:39,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:39,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:57:39,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:57:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:57:39,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:39,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:57:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:57:39,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:57:39,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:57:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:39,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:40,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:40,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:57:40,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:57:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-26 22:57:40,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:57:40,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:57:40,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-26 22:57:40,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:40,490 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-10-26 22:57:40,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:57:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:57:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:57:40,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:57:40,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:57:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:57:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 22:57:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:57:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:57:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:57:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:57:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:57:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:57:41,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071954209] [2020-10-26 22:57:41,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:57:41,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:57:41,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581770098] [2020-10-26 22:57:41,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:57:41,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:57:41,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:57:41,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:57:41,742 INFO L87 Difference]: Start difference. First operand 42499 states and 54496 transitions. Second operand 9 states. [2020-10-26 22:57:41,960 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-26 22:57:42,910 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 22:57:45,787 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 22:58:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:58:07,761 INFO L93 Difference]: Finished difference Result 97016 states and 128648 transitions. [2020-10-26 22:58:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:58:07,768 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-10-26 22:58:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:58:07,951 INFO L225 Difference]: With dead ends: 97016 [2020-10-26 22:58:07,952 INFO L226 Difference]: Without dead ends: 55290 [2020-10-26 22:58:08,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-10-26 22:58:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55290 states. [2020-10-26 22:58:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55290 to 51277. [2020-10-26 22:58:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51277 states. [2020-10-26 22:58:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51277 states to 51277 states and 69437 transitions. [2020-10-26 22:58:09,866 INFO L78 Accepts]: Start accepts. Automaton has 51277 states and 69437 transitions. Word has length 248 [2020-10-26 22:58:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:58:09,866 INFO L481 AbstractCegarLoop]: Abstraction has 51277 states and 69437 transitions. [2020-10-26 22:58:09,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:58:09,867 INFO L276 IsEmpty]: Start isEmpty. Operand 51277 states and 69437 transitions. [2020-10-26 22:58:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-26 22:58:09,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:09,881 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:09,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:58:09,882 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1164617104, now seen corresponding path program 1 times [2020-10-26 22:58:09,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:09,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250650912] [2020-10-26 22:58:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:15,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:15,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-26 22:58:15,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:58:15,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 22:58:15,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:58:15,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:58:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 22:58:15,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:15,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:15,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:15,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:15,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:58:15,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:58:15,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:15,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:58:15,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:58:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:15,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:15,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:58:15,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:15,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 22:58:15,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:15,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:58:15,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:15,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:58:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:15,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:15,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:58:15,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:58:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 22:58:15,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:58:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:58:15,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-26 22:58:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:16,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:16,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 22:58:16,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-26 22:58:16,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:58:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-26 22:58:16,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 246 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 22:58:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250650912] [2020-10-26 22:58:16,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:58:16,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:58:16,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027244719] [2020-10-26 22:58:16,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:58:16,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:16,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:58:16,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:58:16,401 INFO L87 Difference]: Start difference. First operand 51277 states and 69437 transitions. Second operand 7 states. [2020-10-26 22:58:37,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:58:37,879 INFO L93 Difference]: Finished difference Result 118970 states and 164533 transitions. [2020-10-26 22:58:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:58:37,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-26 22:58:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:58:38,120 INFO L225 Difference]: With dead ends: 118970 [2020-10-26 22:58:38,120 INFO L226 Difference]: Without dead ends: 67699 [2020-10-26 22:58:38,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:58:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67699 states. [2020-10-26 22:58:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67699 to 66896. [2020-10-26 22:58:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66896 states. [2020-10-26 22:58:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66896 states to 66896 states and 91822 transitions. [2020-10-26 22:58:40,711 INFO L78 Accepts]: Start accepts. Automaton has 66896 states and 91822 transitions. Word has length 402 [2020-10-26 22:58:40,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:58:40,712 INFO L481 AbstractCegarLoop]: Abstraction has 66896 states and 91822 transitions. [2020-10-26 22:58:40,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:58:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 66896 states and 91822 transitions. [2020-10-26 22:58:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-26 22:58:40,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:40,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:40,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:58:40,955 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:40,955 INFO L82 PathProgramCache]: Analyzing trace with hash -430837256, now seen corresponding path program 1 times [2020-10-26 22:58:40,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:40,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977811470] [2020-10-26 22:58:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:42,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:45,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:45,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-26 22:58:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:58:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4724 [2020-10-26 22:58:45,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:58:45,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:58:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:45,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:45,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:45,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:58:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:58:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:58:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:58:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:46,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:58:46,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 22:58:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:58:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:58:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:46,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:46,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:58:46,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:46,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 22:58:46,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:46,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:46,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:58:46,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:58:46,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:46,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-26 22:58:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:46,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 22:58:46,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 22:58:46,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:58:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:58:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:58:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 108 proven. 88 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-26 22:58:46,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977811470] [2020-10-26 22:58:46,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:58:46,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:58:46,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802354104] [2020-10-26 22:58:46,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:58:46,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:46,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:58:46,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:58:46,841 INFO L87 Difference]: Start difference. First operand 66896 states and 91822 transitions. Second operand 7 states. [2020-10-26 22:58:48,358 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 22:59:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:16,186 INFO L93 Difference]: Finished difference Result 161576 states and 247090 transitions. [2020-10-26 22:59:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:59:16,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 406 [2020-10-26 22:59:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted.