/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:05:03,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:05:03,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:05:03,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:05:03,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:05:03,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:05:03,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:05:03,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:05:03,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:05:03,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:05:03,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:05:03,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:05:03,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:05:03,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:05:03,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:05:03,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:05:03,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:05:03,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:05:03,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:05:03,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:05:03,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:05:03,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:05:03,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:05:03,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:05:03,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:05:03,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:05:03,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:05:03,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:05:03,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:05:03,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:05:03,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:05:03,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:05:03,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:05:03,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:05:03,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:05:03,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:05:03,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:05:03,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:05:03,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:05:03,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:05:03,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:05:03,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:05:03,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:05:03,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:05:03,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:05:03,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:05:03,944 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:05:03,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:05:03,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:05:03,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:05:03,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:05:03,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:05:03,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:05:03,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:05:03,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:05:03,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:05:03,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:05:03,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:05:03,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:05:03,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:05:03,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:05:03,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:05:03,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:05:03,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:05:03,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:05:03,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:05:03,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:05:03,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:05:03,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:05:03,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:05:03,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:05:03,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:05:04,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:05:04,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:05:04,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:05:04,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:05:04,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:05:04,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26.c [2020-10-28 13:05:04,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc9c5ab4/5067b62fdab44a90905e057ecadb90df/FLAGccab7e39a [2020-10-28 13:05:05,363 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:05:05,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label26.c [2020-10-28 13:05:05,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc9c5ab4/5067b62fdab44a90905e057ecadb90df/FLAGccab7e39a [2020-10-28 13:05:05,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc9c5ab4/5067b62fdab44a90905e057ecadb90df [2020-10-28 13:05:05,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:05:05,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:05:05,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:05:05,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:05:05,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:05:05,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:05:05" (1/1) ... [2020-10-28 13:05:05,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dee31a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:05, skipping insertion in model container [2020-10-28 13:05:05,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:05:05" (1/1) ... [2020-10-28 13:05:05,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:05:05,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:05:06,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:05:06,530 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:05:06,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:05:06,842 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:05:06,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06 WrapperNode [2020-10-28 13:05:06,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:05:06,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:05:06,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:05:06,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:05:06,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (1/1) ... [2020-10-28 13:05:06,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (1/1) ... [2020-10-28 13:05:06,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (1/1) ... [2020-10-28 13:05:06,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (1/1) ... [2020-10-28 13:05:07,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (1/1) ... [2020-10-28 13:05:07,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (1/1) ... [2020-10-28 13:05:07,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (1/1) ... [2020-10-28 13:05:07,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:05:07,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:05:07,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:05:07,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:05:07,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:05:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:05:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:05:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:05:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:05:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:05:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:05:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:05:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:05:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:05:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:05:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:05:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:05:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:05:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:05:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:05:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:05:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:05:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:05:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:05:07,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:05:07,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:05:10,557 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:05:10,557 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:05:10,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:05:10 BoogieIcfgContainer [2020-10-28 13:05:10,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:05:10,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:05:10,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:05:10,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:05:10,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:05:05" (1/3) ... [2020-10-28 13:05:10,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e83a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:05:10, skipping insertion in model container [2020-10-28 13:05:10,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:05:06" (2/3) ... [2020-10-28 13:05:10,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e83a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:05:10, skipping insertion in model container [2020-10-28 13:05:10,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:05:10" (3/3) ... [2020-10-28 13:05:10,572 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label26.c [2020-10-28 13:05:10,585 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:05:10,591 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:05:10,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:05:10,648 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:05:10,649 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:05:10,649 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:05:10,649 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:05:10,649 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:05:10,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:05:10,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:05:10,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:05:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:05:10,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 13:05:10,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:10,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:10,687 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:10,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2101893985, now seen corresponding path program 1 times [2020-10-28 13:05:10,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:10,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842242298] [2020-10-28 13:05:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:11,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:11,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:05:11,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-28 13:05:11,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:11,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:05:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:05:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 13:05:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:05:11,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:11,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:11,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:11,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:11,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:05:11,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:11,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:05:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:05:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:05:11,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842242298] [2020-10-28 13:05:11,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:05:11,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:05:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474304177] [2020-10-28 13:05:11,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:05:11,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:11,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:05:11,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:05:11,801 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:05:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:17,239 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-28 13:05:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:05:17,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-28 13:05:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:17,266 INFO L225 Difference]: With dead ends: 1229 [2020-10-28 13:05:17,266 INFO L226 Difference]: Without dead ends: 709 [2020-10-28 13:05:17,280 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 [2020-10-28 13:05:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-28 13:05:17,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-28 13:05:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-28 13:05:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-28 13:05:17,399 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 60 [2020-10-28 13:05:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:17,400 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-28 13:05:17,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:05:17,400 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-28 13:05:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 13:05:17,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:17,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:17,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:05:17,409 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:17,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:17,410 INFO L82 PathProgramCache]: Analyzing trace with hash -46364134, now seen corresponding path program 1 times [2020-10-28 13:05:17,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:17,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408391627] [2020-10-28 13:05:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:19,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:19,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:05:19,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:05:19,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2118 [2020-10-28 13:05:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:19,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:05:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:05:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:05:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:05:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:19,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:19,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:19,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:19,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:19,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:05:19,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:19,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:19,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:19,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:05:19,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:05:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:19,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:19,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:19,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:05:19,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:05:19,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:19,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:05:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:05:20,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408391627] [2020-10-28 13:05:20,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:05:20,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:05:20,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540406884] [2020-10-28 13:05:20,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:20,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:20,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:20,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:20,106 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 7 states. [2020-10-28 13:05:27,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:27,258 INFO L93 Difference]: Finished difference Result 1722 states and 2740 transitions. [2020-10-28 13:05:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:05:27,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-28 13:05:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:27,268 INFO L225 Difference]: With dead ends: 1722 [2020-10-28 13:05:27,269 INFO L226 Difference]: Without dead ends: 1033 [2020-10-28 13:05:27,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:05:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-28 13:05:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 999. [2020-10-28 13:05:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-10-28 13:05:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1350 transitions. [2020-10-28 13:05:27,334 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1350 transitions. Word has length 130 [2020-10-28 13:05:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:27,337 INFO L481 AbstractCegarLoop]: Abstraction has 999 states and 1350 transitions. [2020-10-28 13:05:27,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1350 transitions. [2020-10-28 13:05:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 13:05:27,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:27,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:27,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:05:27,352 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:27,353 INFO L82 PathProgramCache]: Analyzing trace with hash -80703662, now seen corresponding path program 1 times [2020-10-28 13:05:27,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:27,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826024341] [2020-10-28 13:05:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:27,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:28,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:28,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 13:05:28,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-10-28 13:05:28,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:28,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:05:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:05:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:05:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:29,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:29,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:29,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:05:29,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:29,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:05:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:29,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:29,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:05:29,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:29,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:05:29,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:29,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:29,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:29,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:05:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:05:29,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826024341] [2020-10-28 13:05:29,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:05:29,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:05:29,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018808617] [2020-10-28 13:05:29,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:29,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:29,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:29,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:29,362 INFO L87 Difference]: Start difference. First operand 999 states and 1350 transitions. Second operand 7 states. [2020-10-28 13:05:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:39,699 INFO L93 Difference]: Finished difference Result 2347 states and 3326 transitions. [2020-10-28 13:05:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:05:39,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 13:05:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:39,710 INFO L225 Difference]: With dead ends: 2347 [2020-10-28 13:05:39,710 INFO L226 Difference]: Without dead ends: 1661 [2020-10-28 13:05:39,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:05:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2020-10-28 13:05:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1323. [2020-10-28 13:05:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-28 13:05:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1711 transitions. [2020-10-28 13:05:39,759 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1711 transitions. Word has length 134 [2020-10-28 13:05:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:39,760 INFO L481 AbstractCegarLoop]: Abstraction has 1323 states and 1711 transitions. [2020-10-28 13:05:39,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1711 transitions. [2020-10-28 13:05:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 13:05:39,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:39,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:39,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:05:39,764 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash 912649175, now seen corresponding path program 1 times [2020-10-28 13:05:39,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:39,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705470493] [2020-10-28 13:05:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:40,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:43,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:43,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 13:05:43,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:43,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3325 [2020-10-28 13:05:43,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:43,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:05:43,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:05:43,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:05:43,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:43,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:05:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:43,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:05:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:43,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:43,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:05:43,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-28 13:05:43,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:43,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:43,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:05:43,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:05:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:05:44,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705470493] [2020-10-28 13:05:44,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:05:44,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:05:44,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585885897] [2020-10-28 13:05:44,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:05:44,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:44,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:05:44,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:05:44,307 INFO L87 Difference]: Start difference. First operand 1323 states and 1711 transitions. Second operand 8 states. [2020-10-28 13:05:44,463 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:05:55,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:55,193 INFO L93 Difference]: Finished difference Result 2991 states and 3789 transitions. [2020-10-28 13:05:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:05:55,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-28 13:05:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:55,208 INFO L225 Difference]: With dead ends: 2991 [2020-10-28 13:05:55,208 INFO L226 Difference]: Without dead ends: 1674 [2020-10-28 13:05:55,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:05:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-10-28 13:05:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1634. [2020-10-28 13:05:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1634 states. [2020-10-28 13:05:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2032 transitions. [2020-10-28 13:05:55,265 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2032 transitions. Word has length 260 [2020-10-28 13:05:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:55,266 INFO L481 AbstractCegarLoop]: Abstraction has 1634 states and 2032 transitions. [2020-10-28 13:05:55,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:05:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2032 transitions. [2020-10-28 13:05:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-28 13:05:55,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:55,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:55,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:05:55,273 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:55,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:55,274 INFO L82 PathProgramCache]: Analyzing trace with hash 356585454, now seen corresponding path program 1 times [2020-10-28 13:05:55,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:55,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207725098] [2020-10-28 13:05:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:55,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:57,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:57,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-28 13:05:57,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:05:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1696 [2020-10-28 13:05:57,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:57,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:05:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 13:05:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:57,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:57,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:57,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:57,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:57,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:05:57,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:57,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:05:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:57,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:57,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:05:57,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-28 13:05:57,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:57,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:05:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:05:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:05:58,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207725098] [2020-10-28 13:05:58,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:58,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:05:58,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442320870] [2020-10-28 13:05:58,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:05:58,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:58,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:05:58,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:05:58,003 INFO L87 Difference]: Start difference. First operand 1634 states and 2032 transitions. Second operand 5 states. [2020-10-28 13:06:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:07,588 INFO L93 Difference]: Finished difference Result 3264 states and 4357 transitions. [2020-10-28 13:06:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:06:07,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-28 13:06:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:07,617 INFO L225 Difference]: With dead ends: 3264 [2020-10-28 13:06:07,617 INFO L226 Difference]: Without dead ends: 2572 [2020-10-28 13:06:07,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:06:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2020-10-28 13:06:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2568. [2020-10-28 13:06:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2020-10-28 13:06:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3111 transitions. [2020-10-28 13:06:07,699 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3111 transitions. Word has length 334 [2020-10-28 13:06:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:07,700 INFO L481 AbstractCegarLoop]: Abstraction has 2568 states and 3111 transitions. [2020-10-28 13:06:07,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:06:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3111 transitions. [2020-10-28 13:06:07,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-28 13:06:07,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:07,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:07,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:06:07,710 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:07,710 INFO L82 PathProgramCache]: Analyzing trace with hash -477629005, now seen corresponding path program 1 times [2020-10-28 13:06:07,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:07,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757035984] [2020-10-28 13:06:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:08,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:10,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:10,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-28 13:06:10,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:06:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2968 [2020-10-28 13:06:10,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:10,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:06:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:06:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:10,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:10,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:10,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:06:10,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:10,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:11,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:11,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:11,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:06:11,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:11,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-28 13:06:11,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:11,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:06:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:06:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:11,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:11,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:06:11,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 13:06:11,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:11,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:06:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:06:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:06:11,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757035984] [2020-10-28 13:06:11,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:11,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:06:11,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229914050] [2020-10-28 13:06:11,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:06:11,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:11,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:06:11,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:06:11,884 INFO L87 Difference]: Start difference. First operand 2568 states and 3111 transitions. Second operand 7 states. [2020-10-28 13:06:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:23,370 INFO L93 Difference]: Finished difference Result 5828 states and 7336 transitions. [2020-10-28 13:06:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:06:23,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-28 13:06:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:23,392 INFO L225 Difference]: With dead ends: 5828 [2020-10-28 13:06:23,392 INFO L226 Difference]: Without dead ends: 3573 [2020-10-28 13:06:23,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:06:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2020-10-28 13:06:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3546. [2020-10-28 13:06:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-28 13:06:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 4265 transitions. [2020-10-28 13:06:23,530 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 4265 transitions. Word has length 414 [2020-10-28 13:06:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:23,531 INFO L481 AbstractCegarLoop]: Abstraction has 3546 states and 4265 transitions. [2020-10-28 13:06:23,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:06:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 4265 transitions. [2020-10-28 13:06:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-28 13:06:23,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:23,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:23,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:06:23,542 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:23,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1818396783, now seen corresponding path program 1 times [2020-10-28 13:06:23,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:23,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927112500] [2020-10-28 13:06:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:25,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:28,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:28,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-28 13:06:28,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:06:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:06:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:28,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:06:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:06:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 13:06:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:28,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:28,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:28,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:28,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:28,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:06:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:28,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:28,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:28,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:06:28,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:06:28,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:28,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:06:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:28,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:06:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:29,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:29,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:06:29,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:06:29,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-28 13:06:29,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:29,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:06:29,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:06:29,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-28 13:06:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:29,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:29,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:29,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:06:29,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:29,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:06:29,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:29,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:06:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:06:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 325 proven. 77 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 13:06:30,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927112500] [2020-10-28 13:06:30,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:30,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:06:30,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068468764] [2020-10-28 13:06:30,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:06:30,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:30,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:06:30,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:06:30,168 INFO L87 Difference]: Start difference. First operand 3546 states and 4265 transitions. Second operand 8 states. [2020-10-28 13:06:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:47,111 INFO L93 Difference]: Finished difference Result 8775 states and 11027 transitions. [2020-10-28 13:06:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:06:47,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 435 [2020-10-28 13:06:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:47,142 INFO L225 Difference]: With dead ends: 8775 [2020-10-28 13:06:47,142 INFO L226 Difference]: Without dead ends: 5224 [2020-10-28 13:06:47,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:06:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2020-10-28 13:06:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 4549. [2020-10-28 13:06:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4549 states. [2020-10-28 13:06:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 5377 transitions. [2020-10-28 13:06:47,301 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 5377 transitions. Word has length 435 [2020-10-28 13:06:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:47,301 INFO L481 AbstractCegarLoop]: Abstraction has 4549 states and 5377 transitions. [2020-10-28 13:06:47,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:06:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 5377 transitions. [2020-10-28 13:06:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-28 13:06:47,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:47,313 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:47,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:06:47,314 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:47,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:47,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1498994720, now seen corresponding path program 1 times [2020-10-28 13:06:47,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:47,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376202543] [2020-10-28 13:06:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:50,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-28 13:06:50,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:06:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2618 [2020-10-28 13:06:50,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:50,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:06:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:06:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:50,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:50,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:50,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:50,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:50,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:50,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:06:50,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:50,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:50,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:50,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:06:50,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 13:06:50,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:50,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:06:50,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:50,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:06:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:50,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:51,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:06:51,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:06:51,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376202543] [2020-10-28 13:06:51,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:51,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:06:51,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315300202] [2020-10-28 13:06:51,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:06:51,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:51,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:06:51,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:06:51,494 INFO L87 Difference]: Start difference. First operand 4549 states and 5377 transitions. Second operand 7 states. [2020-10-28 13:07:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:03,526 INFO L93 Difference]: Finished difference Result 10765 states and 12827 transitions. [2020-10-28 13:07:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:07:03,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-28 13:07:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:03,563 INFO L225 Difference]: With dead ends: 10765 [2020-10-28 13:07:03,563 INFO L226 Difference]: Without dead ends: 6529 [2020-10-28 13:07:03,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:07:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2020-10-28 13:07:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 6140. [2020-10-28 13:07:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6140 states. [2020-10-28 13:07:03,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 7166 transitions. [2020-10-28 13:07:03,758 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 7166 transitions. Word has length 445 [2020-10-28 13:07:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:03,759 INFO L481 AbstractCegarLoop]: Abstraction has 6140 states and 7166 transitions. [2020-10-28 13:07:03,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 7166 transitions. [2020-10-28 13:07:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-28 13:07:03,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:03,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:03,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:07:03,765 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:03,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1662177624, now seen corresponding path program 1 times [2020-10-28 13:07:03,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:03,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945717647] [2020-10-28 13:07:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:03,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:04,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:04,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-28 13:07:04,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:04,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-28 13:07:04,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:04,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:07:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 13:07:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:04,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:04,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:04,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:04,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:07:04,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:04,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:04,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:04,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:04,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:07:04,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:07:04,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:04,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:04,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:07:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:05,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:05,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:07:05,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:07:05,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:05,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:07:05,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:07:05,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945717647] [2020-10-28 13:07:05,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:05,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:07:05,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49608961] [2020-10-28 13:07:05,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:07:05,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:05,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:07:05,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:07:05,327 INFO L87 Difference]: Start difference. First operand 6140 states and 7166 transitions. Second operand 5 states. [2020-10-28 13:07:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:16,551 INFO L93 Difference]: Finished difference Result 13237 states and 15888 transitions. [2020-10-28 13:07:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:07:16,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2020-10-28 13:07:16,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:16,597 INFO L225 Difference]: With dead ends: 13237 [2020-10-28 13:07:16,597 INFO L226 Difference]: Without dead ends: 7410 [2020-10-28 13:07:16,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:07:16,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7410 states. [2020-10-28 13:07:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7410 to 7096. [2020-10-28 13:07:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7096 states. [2020-10-28 13:07:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7096 states to 7096 states and 8259 transitions. [2020-10-28 13:07:16,791 INFO L78 Accepts]: Start accepts. Automaton has 7096 states and 8259 transitions. Word has length 457 [2020-10-28 13:07:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:16,792 INFO L481 AbstractCegarLoop]: Abstraction has 7096 states and 8259 transitions. [2020-10-28 13:07:16,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:07:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7096 states and 8259 transitions. [2020-10-28 13:07:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-28 13:07:16,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:16,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:16,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:07:16,803 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:16,804 INFO L82 PathProgramCache]: Analyzing trace with hash -60415380, now seen corresponding path program 1 times [2020-10-28 13:07:16,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:16,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706165205] [2020-10-28 13:07:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:17,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:20,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:21,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:21,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-28 13:07:21,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:07:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:07:21,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:21,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:07:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 13:07:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:22,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:07:22,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:22,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:22,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:22,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:07:22,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:07:22,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:22,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:22,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:07:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:22,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:22,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:07:22,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:07:22,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:22,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:07:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:07:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:22,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:07:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:07:22,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:22,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 13:07:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 278 proven. 53 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:07:23,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706165205] [2020-10-28 13:07:23,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:23,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:07:23,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458382912] [2020-10-28 13:07:23,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:07:23,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:23,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:07:23,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:07:23,086 INFO L87 Difference]: Start difference. First operand 7096 states and 8259 transitions. Second operand 6 states. [2020-10-28 13:07:36,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:36,718 INFO L93 Difference]: Finished difference Result 14982 states and 18180 transitions. [2020-10-28 13:07:36,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:07:36,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 548 [2020-10-28 13:07:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:36,755 INFO L225 Difference]: With dead ends: 14982 [2020-10-28 13:07:36,755 INFO L226 Difference]: Without dead ends: 9756 [2020-10-28 13:07:36,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:07:36,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9756 states. [2020-10-28 13:07:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9756 to 9737. [2020-10-28 13:07:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9737 states. [2020-10-28 13:07:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9737 states to 9737 states and 11694 transitions. [2020-10-28 13:07:36,983 INFO L78 Accepts]: Start accepts. Automaton has 9737 states and 11694 transitions. Word has length 548 [2020-10-28 13:07:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:36,984 INFO L481 AbstractCegarLoop]: Abstraction has 9737 states and 11694 transitions. [2020-10-28 13:07:36,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:07:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9737 states and 11694 transitions. [2020-10-28 13:07:36,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-28 13:07:36,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:36,993 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:36,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:07:36,993 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:36,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:36,994 INFO L82 PathProgramCache]: Analyzing trace with hash 415020746, now seen corresponding path program 1 times [2020-10-28 13:07:36,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:36,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698869540] [2020-10-28 13:07:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:40,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:40,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-28 13:07:40,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:07:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3669 [2020-10-28 13:07:40,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:40,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:07:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:07:40,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:40,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:40,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:40,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:07:40,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:40,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:41,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:41,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:41,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:07:41,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:07:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:41,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:07:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:41,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:41,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:07:41,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:07:41,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:41,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:07:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:07:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:41,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:41,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:41,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 13:07:41,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:07:41,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:41,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 13:07:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:07:41,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698869540] [2020-10-28 13:07:41,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:41,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:07:41,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702307776] [2020-10-28 13:07:41,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:41,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:41,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:41,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:41,773 INFO L87 Difference]: Start difference. First operand 9737 states and 11694 transitions. Second operand 7 states. [2020-10-28 13:07:45,814 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:07:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:55,867 INFO L93 Difference]: Finished difference Result 20279 states and 26225 transitions. [2020-10-28 13:07:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:07:55,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-28 13:07:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:55,927 INFO L225 Difference]: With dead ends: 20279 [2020-10-28 13:07:55,927 INFO L226 Difference]: Without dead ends: 12412 [2020-10-28 13:07:55,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:07:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12412 states. [2020-10-28 13:07:56,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12412 to 12312. [2020-10-28 13:07:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12312 states. [2020-10-28 13:07:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12312 states to 12312 states and 15057 transitions. [2020-10-28 13:07:56,255 INFO L78 Accepts]: Start accepts. Automaton has 12312 states and 15057 transitions. Word has length 558 [2020-10-28 13:07:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:56,257 INFO L481 AbstractCegarLoop]: Abstraction has 12312 states and 15057 transitions. [2020-10-28 13:07:56,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 12312 states and 15057 transitions. [2020-10-28 13:07:56,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-10-28 13:07:56,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:56,267 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:56,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:07:56,267 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:56,269 INFO L82 PathProgramCache]: Analyzing trace with hash 899428986, now seen corresponding path program 1 times [2020-10-28 13:07:56,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:56,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143190073] [2020-10-28 13:07:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:56,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:59,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:00,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:00,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-28 13:08:00,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:08:00,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4376 [2020-10-28 13:08:00,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:00,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:08:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:01,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:01,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:01,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:01,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:01,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:08:01,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:01,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:01,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:01,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:01,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:01,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:08:01,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:01,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:01,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:01,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:01,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:01,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:01,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:08:01,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:01,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:01,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:01,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:01,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:08:01,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:01,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-28 13:08:01,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:01,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:08:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:08:02,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143190073] [2020-10-28 13:08:02,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:02,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:02,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671411194] [2020-10-28 13:08:02,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:02,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:02,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:02,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:02,359 INFO L87 Difference]: Start difference. First operand 12312 states and 15057 transitions. Second operand 7 states. [2020-10-28 13:08:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:16,622 INFO L93 Difference]: Finished difference Result 28353 states and 36072 transitions. [2020-10-28 13:08:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:08:16,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 585 [2020-10-28 13:08:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:16,684 INFO L225 Difference]: With dead ends: 28353 [2020-10-28 13:08:16,684 INFO L226 Difference]: Without dead ends: 17911 [2020-10-28 13:08:16,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:16,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17911 states. [2020-10-28 13:08:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17911 to 17273. [2020-10-28 13:08:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17273 states. [2020-10-28 13:08:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17273 states to 17273 states and 21486 transitions. [2020-10-28 13:08:17,119 INFO L78 Accepts]: Start accepts. Automaton has 17273 states and 21486 transitions. Word has length 585 [2020-10-28 13:08:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:17,120 INFO L481 AbstractCegarLoop]: Abstraction has 17273 states and 21486 transitions. [2020-10-28 13:08:17,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 17273 states and 21486 transitions. [2020-10-28 13:08:17,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2020-10-28 13:08:17,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:17,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:17,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:08:17,133 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1241886357, now seen corresponding path program 1 times [2020-10-28 13:08:17,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:17,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501978295] [2020-10-28 13:08:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:22,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:22,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 638 [2020-10-28 13:08:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:08:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 13:08:22,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:22,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 13:08:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 13:08:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:22,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:22,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:22,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:22,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:22,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:08:22,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:22,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:22,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:22,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:22,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:22,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:22,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:08:22,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:22,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:22,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:22,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:22,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:22,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:22,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:22,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:08:22,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:22,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:22,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:22,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:08:22,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:08:22,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:22,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:08:22,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 159 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-28 13:08:23,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501978295] [2020-10-28 13:08:23,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:23,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:08:23,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325368645] [2020-10-28 13:08:23,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:08:23,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:23,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:08:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:08:23,224 INFO L87 Difference]: Start difference. First operand 17273 states and 21486 transitions. Second operand 5 states. [2020-10-28 13:08:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:33,778 INFO L93 Difference]: Finished difference Result 37961 states and 48775 transitions. [2020-10-28 13:08:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:08:33,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 622 [2020-10-28 13:08:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:33,848 INFO L225 Difference]: With dead ends: 37961 [2020-10-28 13:08:33,849 INFO L226 Difference]: Without dead ends: 21001 [2020-10-28 13:08:33,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:08:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21001 states. [2020-10-28 13:08:34,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21001 to 20999. [2020-10-28 13:08:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20999 states. [2020-10-28 13:08:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20999 states to 20999 states and 25798 transitions. [2020-10-28 13:08:34,297 INFO L78 Accepts]: Start accepts. Automaton has 20999 states and 25798 transitions. Word has length 622 [2020-10-28 13:08:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:34,298 INFO L481 AbstractCegarLoop]: Abstraction has 20999 states and 25798 transitions. [2020-10-28 13:08:34,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:08:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 20999 states and 25798 transitions. [2020-10-28 13:08:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-28 13:08:34,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:34,311 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:34,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:08:34,312 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:34,312 INFO L82 PathProgramCache]: Analyzing trace with hash -791672433, now seen corresponding path program 1 times [2020-10-28 13:08:34,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:34,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413609389] [2020-10-28 13:08:34,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-28 13:08:39,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:08:39,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 13:08:39,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 492 [2020-10-28 13:08:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:08:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:39,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:39,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:39,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:39,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:39,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:08:39,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:39,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:39,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:08:39,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:40,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:40,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:40,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 13:08:40,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:08:40,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:40,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:40,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:08:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:40,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-10-28 13:08:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:40,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:40,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:40,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:08:40,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 13:08:40,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:40,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:08:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 522 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-28 13:08:40,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413609389] [2020-10-28 13:08:40,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:40,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:40,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054856694] [2020-10-28 13:08:40,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:40,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:40,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:40,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:40,709 INFO L87 Difference]: Start difference. First operand 20999 states and 25798 transitions. Second operand 7 states. [2020-10-28 13:08:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:54,045 INFO L93 Difference]: Finished difference Result 47572 states and 59350 transitions. [2020-10-28 13:08:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:08:54,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 661 [2020-10-28 13:08:54,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:54,130 INFO L225 Difference]: With dead ends: 47572 [2020-10-28 13:08:54,130 INFO L226 Difference]: Without dead ends: 26221 [2020-10-28 13:08:54,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26221 states. [2020-10-28 13:08:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26221 to 23134. [2020-10-28 13:08:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23134 states. [2020-10-28 13:08:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23134 states to 23134 states and 27377 transitions. [2020-10-28 13:08:54,810 INFO L78 Accepts]: Start accepts. Automaton has 23134 states and 27377 transitions. Word has length 661 [2020-10-28 13:08:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:54,811 INFO L481 AbstractCegarLoop]: Abstraction has 23134 states and 27377 transitions. [2020-10-28 13:08:54,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:54,811 INFO L276 IsEmpty]: Start isEmpty. Operand 23134 states and 27377 transitions. [2020-10-28 13:08:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2020-10-28 13:08:54,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:54,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:54,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:08:54,831 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:54,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1675556287, now seen corresponding path program 1 times [2020-10-28 13:08:54,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:54,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484662344] [2020-10-28 13:08:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking...