/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:08:26,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:08:26,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:08:26,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:08:26,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:08:26,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:08:26,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:08:26,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:08:26,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:08:26,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:08:26,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:08:26,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:08:26,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:08:26,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:08:26,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:08:26,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:08:26,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:08:26,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:08:26,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:08:26,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:08:26,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:08:26,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:08:26,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:08:26,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:08:26,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:08:26,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:08:26,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:08:26,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:08:26,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:08:26,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:08:26,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:08:26,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:08:26,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:08:26,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:08:26,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:08:26,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:08:26,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:08:26,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:08:26,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:08:26,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:08:26,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:08:26,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:08:26,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:08:26,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:08:26,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:08:26,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:08:26,737 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:08:26,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:08:26,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:08:26,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:08:26,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:08:26,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:08:26,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:08:26,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:08:26,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:08:26,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:08:26,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:08:26,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:08:26,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:08:26,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:08:26,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:08:26,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:08:26,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:08:26,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:08:26,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:08:26,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:08:26,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:08:26,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:08:26,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:08:26,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:08:26,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:08:26,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:08:27,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:08:27,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:08:27,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:08:27,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:08:27,167 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:08:27,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19.c [2020-10-27 19:08:27,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba4a021a3/9b1c9d9d46a24c6cbb9433dd4cd23f2e/FLAG0e0cb6c81 [2020-10-27 19:08:28,226 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:08:28,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label19.c [2020-10-27 19:08:28,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba4a021a3/9b1c9d9d46a24c6cbb9433dd4cd23f2e/FLAG0e0cb6c81 [2020-10-27 19:08:28,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba4a021a3/9b1c9d9d46a24c6cbb9433dd4cd23f2e [2020-10-27 19:08:28,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:08:28,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:08:28,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:08:28,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:08:28,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:08:28,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:08:28" (1/1) ... [2020-10-27 19:08:28,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27bfbf7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:28, skipping insertion in model container [2020-10-27 19:08:28,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:08:28" (1/1) ... [2020-10-27 19:08:28,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:08:28,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:08:30,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:08:30,043 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:08:30,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:08:30,534 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:08:30,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30 WrapperNode [2020-10-27 19:08:30,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:08:30,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:08:30,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:08:30,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:08:30,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (1/1) ... [2020-10-27 19:08:30,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (1/1) ... [2020-10-27 19:08:30,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (1/1) ... [2020-10-27 19:08:30,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (1/1) ... [2020-10-27 19:08:30,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (1/1) ... [2020-10-27 19:08:30,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (1/1) ... [2020-10-27 19:08:30,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (1/1) ... [2020-10-27 19:08:30,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:08:30,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:08:30,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:08:30,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:08:30,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:08:30,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:08:30,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:08:30,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:08:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:08:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:08:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:08:30,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:08:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:08:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:08:30,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:08:30,890 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:08:30,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:08:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:08:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:08:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:08:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:08:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:08:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:08:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:08:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:08:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:08:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:08:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:08:34,629 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:08:34,630 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:08:34,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:08:34 BoogieIcfgContainer [2020-10-27 19:08:34,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:08:34,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:08:34,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:08:34,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:08:34,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:08:28" (1/3) ... [2020-10-27 19:08:34,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f25179a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:08:34, skipping insertion in model container [2020-10-27 19:08:34,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:08:30" (2/3) ... [2020-10-27 19:08:34,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f25179a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:08:34, skipping insertion in model container [2020-10-27 19:08:34,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:08:34" (3/3) ... [2020-10-27 19:08:34,641 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label19.c [2020-10-27 19:08:34,653 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:08:34,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:08:34,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:08:34,705 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:08:34,706 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:08:34,706 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:08:34,706 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:08:34,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:08:34,706 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:08:34,706 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:08:34,706 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:08:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:08:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 19:08:34,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:34,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:08:34,748 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:34,759 INFO L82 PathProgramCache]: Analyzing trace with hash 710293960, now seen corresponding path program 1 times [2020-10-27 19:08:34,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:34,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056853845] [2020-10-27 19:08:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:35,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:35,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:08:35,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:35,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-27 19:08:35,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:08:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:08:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 19:08:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:08:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:08:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:35,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:35,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:08:35,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:08:35,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:08:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:08:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:08:35,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056853845] [2020-10-27 19:08:35,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:08:35,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:08:35,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64222297] [2020-10-27 19:08:35,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:08:35,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:08:35,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:08:35,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:08:35,693 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 19:08:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:48,961 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 19:08:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:08:48,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-27 19:08:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:49,001 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 19:08:49,001 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 19:08:49,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:08:49,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 19:08:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 19:08:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 19:08:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 19:08:49,219 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 16 [2020-10-27 19:08:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:49,219 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 19:08:49,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:08:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 19:08:49,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 19:08:49,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:49,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:08:49,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:08:49,225 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:49,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:49,226 INFO L82 PathProgramCache]: Analyzing trace with hash -72286686, now seen corresponding path program 1 times [2020-10-27 19:08:49,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:49,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399388018] [2020-10-27 19:08:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:49,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:50,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:50,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 19:08:50,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:08:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-27 19:08:50,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:08:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 19:08:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:08:50,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:08:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:08:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:50,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:50,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:08:50,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:08:50,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:50,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:08:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:50,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:50,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:08:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 19:08:50,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:08:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:08:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:08:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:08:50,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399388018] [2020-10-27 19:08:50,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:08:50,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:08:50,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143574412] [2020-10-27 19:08:50,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:08:50,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:08:50,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:08:50,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:08:50,312 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 6 states. [2020-10-27 19:09:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:09:00,831 INFO L93 Difference]: Finished difference Result 6407 states and 10822 transitions. [2020-10-27 19:09:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:09:00,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-27 19:09:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:09:00,859 INFO L225 Difference]: With dead ends: 6407 [2020-10-27 19:09:00,859 INFO L226 Difference]: Without dead ends: 4277 [2020-10-27 19:09:00,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:09:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-27 19:09:00,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4266. [2020-10-27 19:09:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4266 states. [2020-10-27 19:09:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 6870 transitions. [2020-10-27 19:09:01,001 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 6870 transitions. Word has length 87 [2020-10-27 19:09:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:09:01,002 INFO L481 AbstractCegarLoop]: Abstraction has 4266 states and 6870 transitions. [2020-10-27 19:09:01,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:09:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 6870 transitions. [2020-10-27 19:09:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 19:09:01,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:09:01,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:09:01,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:09:01,012 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:09:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:09:01,013 INFO L82 PathProgramCache]: Analyzing trace with hash -894980336, now seen corresponding path program 1 times [2020-10-27 19:09:01,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:09:01,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105000906] [2020-10-27 19:09:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:09:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:01,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:02,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:02,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 19:09:02,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:09:02,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1358 [2020-10-27 19:09:02,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:02,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 19:09:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:09:02,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:09:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:02,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:02,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:09:02,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:09:02,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:02,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:09:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:02,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:02,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 19:09:02,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:02,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 19:09:02,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:09:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 19:09:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:09:02,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105000906] [2020-10-27 19:09:02,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:09:02,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:09:02,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953008618] [2020-10-27 19:09:02,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:09:02,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:09:02,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:09:02,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:09:02,944 INFO L87 Difference]: Start difference. First operand 4266 states and 6870 transitions. Second operand 5 states. [2020-10-27 19:09:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:09:13,571 INFO L93 Difference]: Finished difference Result 12794 states and 20907 transitions. [2020-10-27 19:09:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:09:13,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 19:09:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:09:13,630 INFO L225 Difference]: With dead ends: 12794 [2020-10-27 19:09:13,630 INFO L226 Difference]: Without dead ends: 8534 [2020-10-27 19:09:13,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:09:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2020-10-27 19:09:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 8523. [2020-10-27 19:09:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8523 states. [2020-10-27 19:09:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 12434 transitions. [2020-10-27 19:09:13,881 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 12434 transitions. Word has length 166 [2020-10-27 19:09:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:09:13,882 INFO L481 AbstractCegarLoop]: Abstraction has 8523 states and 12434 transitions. [2020-10-27 19:09:13,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:09:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 12434 transitions. [2020-10-27 19:09:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 19:09:13,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:09:13,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:09:13,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:09:13,887 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:09:13,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:09:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1332141160, now seen corresponding path program 1 times [2020-10-27 19:09:13,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:09:13,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91324053] [2020-10-27 19:09:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:09:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:13,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:14,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:18,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:18,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 19:09:18,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:09:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4994 [2020-10-27 19:09:18,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-27 19:09:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:09:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:09:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:19,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:19,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:19,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:09:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:09:19,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:19,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:09:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:19,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:19,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:09:19,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 19:09:19,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:19,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 19:09:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:19,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:19,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 19:09:19,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 19:09:19,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:09:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 19:09:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 19:09:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-27 19:09:19,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91324053] [2020-10-27 19:09:19,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:09:19,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:09:19,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137023306] [2020-10-27 19:09:19,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:09:19,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:09:19,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:09:19,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:09:19,272 INFO L87 Difference]: Start difference. First operand 8523 states and 12434 transitions. Second operand 5 states. [2020-10-27 19:09:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:09:30,175 INFO L93 Difference]: Finished difference Result 21316 states and 32243 transitions. [2020-10-27 19:09:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:09:30,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-27 19:09:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:09:30,235 INFO L225 Difference]: With dead ends: 21316 [2020-10-27 19:09:30,236 INFO L226 Difference]: Without dead ends: 12799 [2020-10-27 19:09:30,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:09:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12799 states. [2020-10-27 19:09:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12799 to 12791. [2020-10-27 19:09:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12791 states. [2020-10-27 19:09:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12791 states to 12791 states and 18144 transitions. [2020-10-27 19:09:30,592 INFO L78 Accepts]: Start accepts. Automaton has 12791 states and 18144 transitions. Word has length 180 [2020-10-27 19:09:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:09:30,593 INFO L481 AbstractCegarLoop]: Abstraction has 12791 states and 18144 transitions. [2020-10-27 19:09:30,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:09:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 12791 states and 18144 transitions. [2020-10-27 19:09:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-27 19:09:30,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:09:30,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:09:30,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:09:30,608 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:09:30,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:09:30,609 INFO L82 PathProgramCache]: Analyzing trace with hash 48592160, now seen corresponding path program 1 times [2020-10-27 19:09:30,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:09:30,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927685012] [2020-10-27 19:09:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:09:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:30,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:30,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:35,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:35,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-27 19:09:35,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:09:35,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 19:09:35,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:35,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 276 [2020-10-27 19:09:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:09:35,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:09:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:35,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:35,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:09:35,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:35,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:09:35,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:35,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:35,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:09:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:35,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:35,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:09:35,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:35,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:09:35,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:35,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:35,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:35,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:35,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:35,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 19:09:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:36,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:36,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-27 19:09:36,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 19:09:36,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:09:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 19:09:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-27 19:09:36,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927685012] [2020-10-27 19:09:36,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:09:36,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:09:36,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900927750] [2020-10-27 19:09:36,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:09:36,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:09:36,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:09:36,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:09:36,286 INFO L87 Difference]: Start difference. First operand 12791 states and 18144 transitions. Second operand 5 states. [2020-10-27 19:09:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:09:46,570 INFO L93 Difference]: Finished difference Result 31240 states and 44707 transitions. [2020-10-27 19:09:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:09:46,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-27 19:09:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:09:46,628 INFO L225 Difference]: With dead ends: 31240 [2020-10-27 19:09:46,629 INFO L226 Difference]: Without dead ends: 18455 [2020-10-27 19:09:46,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:09:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18455 states. [2020-10-27 19:09:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18455 to 18447. [2020-10-27 19:09:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18447 states. [2020-10-27 19:09:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 24772 transitions. [2020-10-27 19:09:47,062 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 24772 transitions. Word has length 280 [2020-10-27 19:09:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:09:47,063 INFO L481 AbstractCegarLoop]: Abstraction has 18447 states and 24772 transitions. [2020-10-27 19:09:47,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:09:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 24772 transitions. [2020-10-27 19:09:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-27 19:09:47,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:09:47,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:09:47,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:09:47,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:09:47,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:09:47,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1420434338, now seen corresponding path program 1 times [2020-10-27 19:09:47,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:09:47,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487742515] [2020-10-27 19:09:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:09:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:49,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:51,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:51,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-27 19:09:51,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:09:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4220 [2020-10-27 19:09:51,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:09:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:09:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 19:09:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:09:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:51,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:51,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:09:51,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:09:51,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:51,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:09:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:09:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:51,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:51,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:51,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:09:51,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 19:09:51,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:09:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:09:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:09:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 19:09:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:52,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:52,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 19:09:52,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:09:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-27 19:09:52,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:09:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 19:09:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:09:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:09:52,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487742515] [2020-10-27 19:09:52,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:09:52,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:09:52,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683100462] [2020-10-27 19:09:52,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:09:52,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:09:52,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:09:52,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:09:52,920 INFO L87 Difference]: Start difference. First operand 18447 states and 24772 transitions. Second operand 7 states. [2020-10-27 19:10:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:10:09,015 INFO L93 Difference]: Finished difference Result 38659 states and 54148 transitions. [2020-10-27 19:10:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:10:09,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-27 19:10:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:10:09,098 INFO L225 Difference]: With dead ends: 38659 [2020-10-27 19:10:09,099 INFO L226 Difference]: Without dead ends: 19492 [2020-10-27 19:10:09,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:10:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19492 states. [2020-10-27 19:10:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19492 to 19281. [2020-10-27 19:10:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19281 states. [2020-10-27 19:10:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19281 states to 19281 states and 23294 transitions. [2020-10-27 19:10:09,619 INFO L78 Accepts]: Start accepts. Automaton has 19281 states and 23294 transitions. Word has length 299 [2020-10-27 19:10:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:10:09,620 INFO L481 AbstractCegarLoop]: Abstraction has 19281 states and 23294 transitions. [2020-10-27 19:10:09,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:10:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 19281 states and 23294 transitions. [2020-10-27 19:10:09,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-27 19:10:09,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:10:09,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:10:09,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:10:09,634 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:10:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:10:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash -305388756, now seen corresponding path program 1 times [2020-10-27 19:10:09,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:10:09,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217870745] [2020-10-27 19:10:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:10:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:11,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:11,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 19:10:11,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:10:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1567 [2020-10-27 19:10:11,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 19:10:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 19:10:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:10:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:11,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:11,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:10:11,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:11,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:10:11,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:10:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:10:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:10:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:11,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:10:11,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 19:10:11,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:10:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:10:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 19:10:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 19:10:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-27 19:10:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:10:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 19:10:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:10:12,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217870745] [2020-10-27 19:10:12,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:10:12,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:10:12,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278502467] [2020-10-27 19:10:12,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:10:12,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:10:12,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:10:12,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:10:12,014 INFO L87 Difference]: Start difference. First operand 19281 states and 23294 transitions. Second operand 7 states. [2020-10-27 19:10:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:10:24,296 INFO L93 Difference]: Finished difference Result 36824 states and 46579 transitions. [2020-10-27 19:10:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:10:24,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-27 19:10:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:10:24,349 INFO L225 Difference]: With dead ends: 36824 [2020-10-27 19:10:24,350 INFO L226 Difference]: Without dead ends: 18253 [2020-10-27 19:10:24,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:10:24,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18253 states. [2020-10-27 19:10:24,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18253 to 16680. [2020-10-27 19:10:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16680 states. [2020-10-27 19:10:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16680 states to 16680 states and 19573 transitions. [2020-10-27 19:10:24,726 INFO L78 Accepts]: Start accepts. Automaton has 16680 states and 19573 transitions. Word has length 300 [2020-10-27 19:10:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:10:24,727 INFO L481 AbstractCegarLoop]: Abstraction has 16680 states and 19573 transitions. [2020-10-27 19:10:24,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:10:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 16680 states and 19573 transitions. [2020-10-27 19:10:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-27 19:10:24,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:10:24,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:10:24,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:10:24,742 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:10:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:10:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1436633158, now seen corresponding path program 1 times [2020-10-27 19:10:24,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:10:24,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596418337] [2020-10-27 19:10:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:10:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:27,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:27,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-27 19:10:27,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:10:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2474 [2020-10-27 19:10:27,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:27,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:27,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 19:10:27,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 19:10:27,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:27,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:10:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:27,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:27,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:10:27,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:10:27,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:10:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:10:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:27,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:10:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:27,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:27,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:27,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:10:27,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 19:10:27,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:10:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:10:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:10:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:27,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 19:10:27,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 19:10:27,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:10:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 19:10:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:10:28,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596418337] [2020-10-27 19:10:28,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:10:28,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:10:28,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359684222] [2020-10-27 19:10:28,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:10:28,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:10:28,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:10:28,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:10:28,194 INFO L87 Difference]: Start difference. First operand 16680 states and 19573 transitions. Second operand 7 states. [2020-10-27 19:10:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:10:38,479 INFO L93 Difference]: Finished difference Result 38158 states and 48667 transitions. [2020-10-27 19:10:38,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:10:38,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-27 19:10:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:10:38,547 INFO L225 Difference]: With dead ends: 38158 [2020-10-27 19:10:38,547 INFO L226 Difference]: Without dead ends: 22188 [2020-10-27 19:10:38,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:10:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22188 states. [2020-10-27 19:10:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22188 to 21207. [2020-10-27 19:10:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21207 states. [2020-10-27 19:10:39,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21207 states to 21207 states and 25108 transitions. [2020-10-27 19:10:39,212 INFO L78 Accepts]: Start accepts. Automaton has 21207 states and 25108 transitions. Word has length 351 [2020-10-27 19:10:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:10:39,213 INFO L481 AbstractCegarLoop]: Abstraction has 21207 states and 25108 transitions. [2020-10-27 19:10:39,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:10:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 21207 states and 25108 transitions. [2020-10-27 19:10:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-27 19:10:39,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:10:39,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:10:39,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:10:39,233 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:10:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:10:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1147066664, now seen corresponding path program 1 times [2020-10-27 19:10:39,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:10:39,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100168599] [2020-10-27 19:10:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:10:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:40,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-27 19:10:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:10:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-10-27 19:10:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 19:10:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 19:10:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:10:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:40,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:40,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:10:40,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:10:40,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:10:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:10:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:10:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:40,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 19:10:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 19:10:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:10:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 19:10:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 19:10:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:41,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:41,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 19:10:41,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:41,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-27 19:10:41,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:10:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 19:10:41,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:10:41,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100168599] [2020-10-27 19:10:41,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:10:41,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:10:41,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231521973] [2020-10-27 19:10:41,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:10:41,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:10:41,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:10:41,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:10:41,519 INFO L87 Difference]: Start difference. First operand 21207 states and 25108 transitions. Second operand 7 states. [2020-10-27 19:10:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:10:50,902 INFO L93 Difference]: Finished difference Result 46823 states and 56912 transitions. [2020-10-27 19:10:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:10:50,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-27 19:10:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:10:50,977 INFO L225 Difference]: With dead ends: 46823 [2020-10-27 19:10:50,977 INFO L226 Difference]: Without dead ends: 26333 [2020-10-27 19:10:51,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:10:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26333 states. [2020-10-27 19:10:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26333 to 23465. [2020-10-27 19:10:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23465 states. [2020-10-27 19:10:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23465 states to 23465 states and 27545 transitions. [2020-10-27 19:10:51,479 INFO L78 Accepts]: Start accepts. Automaton has 23465 states and 27545 transitions. Word has length 354 [2020-10-27 19:10:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:10:51,480 INFO L481 AbstractCegarLoop]: Abstraction has 23465 states and 27545 transitions. [2020-10-27 19:10:51,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:10:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 23465 states and 27545 transitions. [2020-10-27 19:10:51,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-27 19:10:51,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:10:51,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:10:51,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:10:51,496 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:10:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:10:51,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1881089050, now seen corresponding path program 1 times [2020-10-27 19:10:51,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:10:51,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150273325] [2020-10-27 19:10:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:10:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:52,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:53,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-27 19:10:53,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:10:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1653 [2020-10-27 19:10:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 19:10:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 19:10:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:10:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:53,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:53,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:10:53,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:10:53,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:10:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:53,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:10:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:10:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:53,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:53,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:10:53,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 19:10:53,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:10:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 19:10:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 19:10:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:53,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:53,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 19:10:53,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 19:10:53,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:10:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:10:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 19:10:53,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:10:54,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150273325] [2020-10-27 19:10:54,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:10:54,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:10:54,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412243006] [2020-10-27 19:10:54,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:10:54,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:10:54,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:10:54,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:10:54,233 INFO L87 Difference]: Start difference. First operand 23465 states and 27545 transitions. Second operand 7 states. [2020-10-27 19:11:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:07,214 INFO L93 Difference]: Finished difference Result 56388 states and 69760 transitions. [2020-10-27 19:11:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:11:07,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-27 19:11:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:07,310 INFO L225 Difference]: With dead ends: 56388 [2020-10-27 19:11:07,311 INFO L226 Difference]: Without dead ends: 33640 [2020-10-27 19:11:07,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:11:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33640 states. [2020-10-27 19:11:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33640 to 33381. [2020-10-27 19:11:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33381 states. [2020-10-27 19:11:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33381 states to 33381 states and 38478 transitions. [2020-10-27 19:11:08,162 INFO L78 Accepts]: Start accepts. Automaton has 33381 states and 38478 transitions. Word has length 361 [2020-10-27 19:11:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:08,163 INFO L481 AbstractCegarLoop]: Abstraction has 33381 states and 38478 transitions. [2020-10-27 19:11:08,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:11:08,163 INFO L276 IsEmpty]: Start isEmpty. Operand 33381 states and 38478 transitions. [2020-10-27 19:11:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-27 19:11:08,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:08,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:11:08,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:11:08,187 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1083300780, now seen corresponding path program 1 times [2020-10-27 19:11:08,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:08,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666769408] [2020-10-27 19:11:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:09,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:10,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:10,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-27 19:11:10,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:11:10,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-10-27 19:11:10,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 19:11:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 19:11:10,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:10,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:10,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:10,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:11:10,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:10,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:10,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 19:11:10,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 19:11:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 19:11:10,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:10,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 19:11:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:10,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:10,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:10,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 19:11:10,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:11:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 19:11:10,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:11:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 19:11:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:11:11,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666769408] [2020-10-27 19:11:11,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:11,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:11:11,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036985494] [2020-10-27 19:11:11,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:11:11,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:11,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:11:11,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:11:11,220 INFO L87 Difference]: Start difference. First operand 33381 states and 38478 transitions. Second operand 7 states. [2020-10-27 19:11:22,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:22,172 INFO L93 Difference]: Finished difference Result 80133 states and 94913 transitions. [2020-10-27 19:11:22,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:11:22,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-10-27 19:11:22,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:22,277 INFO L225 Difference]: With dead ends: 80133 [2020-10-27 19:11:22,277 INFO L226 Difference]: Without dead ends: 47446 [2020-10-27 19:11:22,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:11:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47446 states. [2020-10-27 19:11:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47446 to 47236. [2020-10-27 19:11:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47236 states. [2020-10-27 19:11:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47236 states to 47236 states and 53864 transitions. [2020-10-27 19:11:23,183 INFO L78 Accepts]: Start accepts. Automaton has 47236 states and 53864 transitions. Word has length 364 [2020-10-27 19:11:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:23,184 INFO L481 AbstractCegarLoop]: Abstraction has 47236 states and 53864 transitions. [2020-10-27 19:11:23,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:11:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 47236 states and 53864 transitions. [2020-10-27 19:11:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-27 19:11:23,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:23,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:23,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:11:23,214 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:23,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1226805301, now seen corresponding path program 1 times [2020-10-27 19:11:23,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:23,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805445642] [2020-10-27 19:11:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:23,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:23,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:28,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:28,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-27 19:11:28,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:11:28,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 19:11:28,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-27 19:11:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 19:11:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:28,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:28,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:28,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:28,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:28,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:11:28,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:11:28,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 19:11:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:28,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:28,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-27 19:11:28,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-27 19:11:28,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-27 19:11:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:11:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:29,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:29,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 19:11:29,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 19:11:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 19:11:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 19:11:29,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805445642] [2020-10-27 19:11:29,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:29,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:29,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764158614] [2020-10-27 19:11:29,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:29,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:29,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:29,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:29,264 INFO L87 Difference]: Start difference. First operand 47236 states and 53864 transitions. Second operand 5 states. [2020-10-27 19:11:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:38,701 INFO L93 Difference]: Finished difference Result 101970 states and 117877 transitions. [2020-10-27 19:11:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:11:38,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 489 [2020-10-27 19:11:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:38,808 INFO L225 Difference]: With dead ends: 101970 [2020-10-27 19:11:38,808 INFO L226 Difference]: Without dead ends: 59072 [2020-10-27 19:11:39,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:11:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59072 states. [2020-10-27 19:11:40,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59072 to 57650. [2020-10-27 19:11:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57650 states. [2020-10-27 19:11:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57650 states to 57650 states and 65072 transitions. [2020-10-27 19:11:40,354 INFO L78 Accepts]: Start accepts. Automaton has 57650 states and 65072 transitions. Word has length 489 [2020-10-27 19:11:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:40,356 INFO L481 AbstractCegarLoop]: Abstraction has 57650 states and 65072 transitions. [2020-10-27 19:11:40,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:11:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 57650 states and 65072 transitions. [2020-10-27 19:11:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-27 19:11:40,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:40,402 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:11:40,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:11:40,402 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:40,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:40,403 INFO L82 PathProgramCache]: Analyzing trace with hash -656395766, now seen corresponding path program 1 times [2020-10-27 19:11:40,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:40,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283525171] [2020-10-27 19:11:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:40,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:41,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:41,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-27 19:11:41,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-27 19:11:41,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:11:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:11:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-27 19:11:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:41,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:41,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:11:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:11:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:41,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:41,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:41,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 19:11:41,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-27 19:11:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:11:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 19:11:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:42,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-27 19:11:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:42,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:42,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 19:11:42,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 19:11:42,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-27 19:11:42,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:42,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 16 proven. 208 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 19:11:42,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283525171] [2020-10-27 19:11:42,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:42,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:11:42,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995026510] [2020-10-27 19:11:42,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:11:42,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:11:42,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:11:42,692 INFO L87 Difference]: Start difference. First operand 57650 states and 65072 transitions. Second operand 8 states. [2020-10-27 19:11:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:11:51,813 INFO L93 Difference]: Finished difference Result 118156 states and 134617 transitions. [2020-10-27 19:11:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 19:11:51,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 481 [2020-10-27 19:11:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:11:51,934 INFO L225 Difference]: With dead ends: 118156 [2020-10-27 19:11:51,934 INFO L226 Difference]: Without dead ends: 61934 [2020-10-27 19:11:51,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:11:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61934 states. [2020-10-27 19:11:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61934 to 61874. [2020-10-27 19:11:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61874 states. [2020-10-27 19:11:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61874 states to 61874 states and 69631 transitions. [2020-10-27 19:11:53,100 INFO L78 Accepts]: Start accepts. Automaton has 61874 states and 69631 transitions. Word has length 481 [2020-10-27 19:11:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:11:53,100 INFO L481 AbstractCegarLoop]: Abstraction has 61874 states and 69631 transitions. [2020-10-27 19:11:53,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:11:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 61874 states and 69631 transitions. [2020-10-27 19:11:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-27 19:11:53,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:11:53,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:11:53,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 19:11:53,433 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:11:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:11:53,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1749127909, now seen corresponding path program 1 times [2020-10-27 19:11:53,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:11:53,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142701538] [2020-10-27 19:11:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:11:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:58,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:58,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-27 19:11:58,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:11:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 19:11:58,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:11:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 501 [2020-10-27 19:11:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 19:11:58,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:11:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:58,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:11:58,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:11:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:58,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:11:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:58,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:58,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:58,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:11:58,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:11:58,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:11:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:11:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:58,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 19:11:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:59,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:59,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-27 19:11:59,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-27 19:11:59,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-27 19:11:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:11:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:11:59,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:11:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:11:59,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 19:11:59,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:11:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 19:11:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:11:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:11:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:11:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 19:11:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:11:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 19:11:59,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142701538] [2020-10-27 19:11:59,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:11:59,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:11:59,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763227860] [2020-10-27 19:11:59,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:11:59,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:11:59,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:11:59,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:11:59,539 INFO L87 Difference]: Start difference. First operand 61874 states and 69631 transitions. Second operand 5 states.