/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:30:22,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:30:22,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:30:22,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:30:22,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:30:22,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:30:22,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:30:22,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:30:22,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:30:22,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:30:22,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:30:22,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:30:22,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:30:22,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:30:22,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:30:22,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:30:22,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:30:22,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:30:22,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:30:22,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:30:22,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:30:22,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:30:22,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:30:22,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:30:22,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:30:22,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:30:22,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:30:22,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:30:22,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:30:22,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:30:22,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:30:22,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:30:22,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:30:22,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:30:22,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:30:22,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:30:22,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:30:22,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:30:22,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:30:22,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:30:22,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:30:22,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:30:22,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:30:22,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:30:22,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:30:22,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:30:22,805 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:30:22,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:30:22,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:30:22,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:30:22,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:30:22,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:30:22,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:30:22,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:30:22,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:30:22,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:30:22,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:30:22,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:30:22,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:30:22,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:30:22,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:30:22,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:30:22,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:30:22,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:30:22,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:30:22,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:30:22,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:30:22,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:30:22,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:30:22,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:30:22,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:30:22,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:30:23,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:30:23,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:30:23,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:30:23,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:30:23,349 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:30:23,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2020-10-28 13:30:23,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f827a7bc3/2bf9dc6a2a814638867ffdac0400149e/FLAG5f228f434 [2020-10-28 13:30:24,392 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:30:24,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2020-10-28 13:30:24,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f827a7bc3/2bf9dc6a2a814638867ffdac0400149e/FLAG5f228f434 [2020-10-28 13:30:24,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f827a7bc3/2bf9dc6a2a814638867ffdac0400149e [2020-10-28 13:30:24,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:30:24,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:30:24,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:30:24,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:30:24,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:30:24,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:30:24" (1/1) ... [2020-10-28 13:30:24,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a52580d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:24, skipping insertion in model container [2020-10-28 13:30:24,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:30:24" (1/1) ... [2020-10-28 13:30:24,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:30:25,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:30:26,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:30:26,199 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:30:26,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:30:26,785 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:30:26,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26 WrapperNode [2020-10-28 13:30:26,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:30:26,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:30:26,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:30:26,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:30:26,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (1/1) ... [2020-10-28 13:30:26,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (1/1) ... [2020-10-28 13:30:26,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (1/1) ... [2020-10-28 13:30:26,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (1/1) ... [2020-10-28 13:30:27,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (1/1) ... [2020-10-28 13:30:27,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (1/1) ... [2020-10-28 13:30:27,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (1/1) ... [2020-10-28 13:30:27,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:30:27,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:30:27,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:30:27,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:30:27,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:30:27,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:30:27,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:30:27,267 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:30:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:30:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:30:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:30:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:30:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:30:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:30:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:30:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:30:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:30:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:30:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:30:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:30:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:30:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:30:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:30:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:30:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:30:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:30:36,558 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:30:36,558 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:30:36,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:30:36 BoogieIcfgContainer [2020-10-28 13:30:36,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:30:36,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:30:36,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:30:36,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:30:36,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:30:24" (1/3) ... [2020-10-28 13:30:36,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40390877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:30:36, skipping insertion in model container [2020-10-28 13:30:36,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:26" (2/3) ... [2020-10-28 13:30:36,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40390877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:30:36, skipping insertion in model container [2020-10-28 13:30:36,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:30:36" (3/3) ... [2020-10-28 13:30:36,576 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label04.c [2020-10-28 13:30:36,589 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:30:36,595 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:30:36,608 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:30:36,655 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:30:36,655 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:30:36,655 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:30:36,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:30:36,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:30:36,656 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:30:36,656 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:30:36,656 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:30:36,688 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:30:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 13:30:36,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:36,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:36,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1029137627, now seen corresponding path program 1 times [2020-10-28 13:30:36,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:36,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040262187] [2020-10-28 13:30:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:37,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:37,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 13:30:37,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-28 13:30:37,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:37,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:37,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:30:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:30:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 13:30:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:30:37,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:37,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:37,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:37,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:30:37,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:37,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:37,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:30:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:30:37,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040262187] [2020-10-28 13:30:37,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:30:37,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:30:37,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681981118] [2020-10-28 13:30:37,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:30:37,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:37,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:30:37,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:30:37,718 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:30:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:52,029 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-28 13:30:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:30:52,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 13:30:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:52,069 INFO L225 Difference]: With dead ends: 1694 [2020-10-28 13:30:52,069 INFO L226 Difference]: Without dead ends: 1010 [2020-10-28 13:30:52,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:30:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-28 13:30:52,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-28 13:30:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-28 13:30:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-28 13:30:52,234 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 27 [2020-10-28 13:30:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:52,235 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-28 13:30:52,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:30:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-28 13:30:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 13:30:52,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:52,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:52,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:30:52,242 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:52,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1150649126, now seen corresponding path program 1 times [2020-10-28 13:30:52,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:52,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456574810] [2020-10-28 13:30:52,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:53,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:53,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:30:53,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:53,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1525 [2020-10-28 13:30:53,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:53,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:30:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:30:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:30:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:30:53,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:54,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:54,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:54,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:30:54,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:54,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:54,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:30:54,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:54,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:54,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:30:54,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 13:30:54,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:54,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:30:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:30:54,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456574810] [2020-10-28 13:30:54,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:30:54,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:30:54,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972367471] [2020-10-28 13:30:54,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:54,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:54,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:54,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:54,410 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 7 states. [2020-10-28 13:31:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:08,409 INFO L93 Difference]: Finished difference Result 2466 states and 3913 transitions. [2020-10-28 13:31:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:31:08,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-28 13:31:08,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:08,424 INFO L225 Difference]: With dead ends: 2466 [2020-10-28 13:31:08,425 INFO L226 Difference]: Without dead ends: 1480 [2020-10-28 13:31:08,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-10-28 13:31:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1442. [2020-10-28 13:31:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2020-10-28 13:31:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1871 transitions. [2020-10-28 13:31:08,483 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1871 transitions. Word has length 98 [2020-10-28 13:31:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:08,484 INFO L481 AbstractCegarLoop]: Abstraction has 1442 states and 1871 transitions. [2020-10-28 13:31:08,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1871 transitions. [2020-10-28 13:31:08,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 13:31:08,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:08,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:08,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:31:08,488 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2145672399, now seen corresponding path program 1 times [2020-10-28 13:31:08,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:08,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740021297] [2020-10-28 13:31:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:31:08,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 13:31:08,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:31:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 13:31:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:08,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:31:08,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:09,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:09,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:31:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:31:09,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:09,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:31:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:31:09,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740021297] [2020-10-28 13:31:09,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:09,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:31:09,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065453722] [2020-10-28 13:31:09,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:31:09,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:09,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:31:09,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:31:09,208 INFO L87 Difference]: Start difference. First operand 1442 states and 1871 transitions. Second operand 5 states. [2020-10-28 13:31:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:22,012 INFO L93 Difference]: Finished difference Result 3350 states and 4601 transitions. [2020-10-28 13:31:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:31:22,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-28 13:31:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:22,025 INFO L225 Difference]: With dead ends: 3350 [2020-10-28 13:31:22,025 INFO L226 Difference]: Without dead ends: 1901 [2020-10-28 13:31:22,029 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 [2020-10-28 13:31:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2020-10-28 13:31:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1886. [2020-10-28 13:31:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2020-10-28 13:31:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2310 transitions. [2020-10-28 13:31:22,088 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2310 transitions. Word has length 101 [2020-10-28 13:31:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:22,088 INFO L481 AbstractCegarLoop]: Abstraction has 1886 states and 2310 transitions. [2020-10-28 13:31:22,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:31:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2310 transitions. [2020-10-28 13:31:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-28 13:31:22,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:22,093 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:22,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:31:22,093 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash -505364161, now seen corresponding path program 1 times [2020-10-28 13:31:22,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:22,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947026400] [2020-10-28 13:31:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:22,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:22,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:23,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:23,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:31:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:31:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-28 13:31:23,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:23,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:31:23,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:31:23,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:23,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:23,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:23,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:23,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:31:23,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:23,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:23,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:23,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:23,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:23,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:23,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:31:23,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:31:23,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:23,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:31:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:31:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:23,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:31:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 13:31:23,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:23,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:31:23,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:31:23,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947026400] [2020-10-28 13:31:23,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:23,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:23,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178729661] [2020-10-28 13:31:23,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:23,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:23,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:23,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:23,959 INFO L87 Difference]: Start difference. First operand 1886 states and 2310 transitions. Second operand 7 states. [2020-10-28 13:31:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:37,154 INFO L93 Difference]: Finished difference Result 4253 states and 5513 transitions. [2020-10-28 13:31:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:31:37,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-10-28 13:31:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:37,178 INFO L225 Difference]: With dead ends: 4253 [2020-10-28 13:31:37,178 INFO L226 Difference]: Without dead ends: 2806 [2020-10-28 13:31:37,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-10-28 13:31:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2795. [2020-10-28 13:31:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-28 13:31:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3417 transitions. [2020-10-28 13:31:37,282 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3417 transitions. Word has length 187 [2020-10-28 13:31:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:37,284 INFO L481 AbstractCegarLoop]: Abstraction has 2795 states and 3417 transitions. [2020-10-28 13:31:37,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3417 transitions. [2020-10-28 13:31:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 13:31:37,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:37,294 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:37,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:31:37,295 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:37,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:37,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2142067933, now seen corresponding path program 1 times [2020-10-28 13:31:37,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:37,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591321840] [2020-10-28 13:31:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:40,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-28 13:31:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4043 [2020-10-28 13:31:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:41,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:31:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 13:31:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:41,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:41,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:41,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:41,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:31:41,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:41,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:41,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:41,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:41,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:31:41,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:41,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:31:41,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:41,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:31:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:41,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:41,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:31:41,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:41,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:31:41,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:41,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:31:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:31:41,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591321840] [2020-10-28 13:31:41,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:41,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:31:41,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966622259] [2020-10-28 13:31:41,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:31:41,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:41,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:31:41,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:31:41,810 INFO L87 Difference]: Start difference. First operand 2795 states and 3417 transitions. Second operand 5 states. [2020-10-28 13:31:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:54,462 INFO L93 Difference]: Finished difference Result 7350 states and 9323 transitions. [2020-10-28 13:31:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:31:54,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-28 13:31:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:54,491 INFO L225 Difference]: With dead ends: 7350 [2020-10-28 13:31:54,491 INFO L226 Difference]: Without dead ends: 4993 [2020-10-28 13:31:54,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:31:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2020-10-28 13:31:54,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4557. [2020-10-28 13:31:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-10-28 13:31:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 5464 transitions. [2020-10-28 13:31:54,626 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 5464 transitions. Word has length 189 [2020-10-28 13:31:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:54,627 INFO L481 AbstractCegarLoop]: Abstraction has 4557 states and 5464 transitions. [2020-10-28 13:31:54,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:31:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 5464 transitions. [2020-10-28 13:31:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-28 13:31:54,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:54,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:54,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:31:54,631 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:54,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:54,631 INFO L82 PathProgramCache]: Analyzing trace with hash -648944915, now seen corresponding path program 1 times [2020-10-28 13:31:54,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:54,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47160656] [2020-10-28 13:31:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 13:31:59,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 13:31:59,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:31:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 13:31:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:59,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:31:59,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:59,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:59,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:31:59,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:31:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:59,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:31:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:00,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:00,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:00,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:32:00,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:32:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 13:32:00,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:00,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:32:00,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:32:00,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47160656] [2020-10-28 13:32:00,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:00,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:32:00,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962851608] [2020-10-28 13:32:00,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:32:00,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:00,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:32:00,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:32:00,313 INFO L87 Difference]: Start difference. First operand 4557 states and 5464 transitions. Second operand 5 states. [2020-10-28 13:32:00,899 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:32:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:11,656 INFO L93 Difference]: Finished difference Result 9550 states and 11690 transitions. [2020-10-28 13:32:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:32:11,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-28 13:32:11,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:11,687 INFO L225 Difference]: With dead ends: 9550 [2020-10-28 13:32:11,687 INFO L226 Difference]: Without dead ends: 4999 [2020-10-28 13:32:11,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:32:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2020-10-28 13:32:11,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4992. [2020-10-28 13:32:11,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4992 states. [2020-10-28 13:32:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 6054 transitions. [2020-10-28 13:32:11,893 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 6054 transitions. Word has length 200 [2020-10-28 13:32:11,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:11,894 INFO L481 AbstractCegarLoop]: Abstraction has 4992 states and 6054 transitions. [2020-10-28 13:32:11,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:32:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 6054 transitions. [2020-10-28 13:32:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 13:32:11,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:11,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:11,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:32:11,900 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1747536124, now seen corresponding path program 1 times [2020-10-28 13:32:11,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:11,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654350770] [2020-10-28 13:32:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:15,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 13:32:15,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:32:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3776 [2020-10-28 13:32:15,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:15,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:32:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 13:32:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:15,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:15,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:15,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:15,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:32:15,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:15,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:15,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:15,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:15,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:15,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:32:15,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:32:16,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:16,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:32:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:16,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:16,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:16,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:32:16,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-28 13:32:16,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:16,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:16,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:32:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:32:16,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654350770] [2020-10-28 13:32:16,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:16,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:32:16,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555250944] [2020-10-28 13:32:16,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:32:16,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:16,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:32:16,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:32:16,513 INFO L87 Difference]: Start difference. First operand 4992 states and 6054 transitions. Second operand 5 states. [2020-10-28 13:32:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:31,929 INFO L93 Difference]: Finished difference Result 11306 states and 13711 transitions. [2020-10-28 13:32:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:32:31,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-28 13:32:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:31,964 INFO L225 Difference]: With dead ends: 11306 [2020-10-28 13:32:31,964 INFO L226 Difference]: Without dead ends: 6320 [2020-10-28 13:32:31,976 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 [2020-10-28 13:32:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2020-10-28 13:32:32,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 5877. [2020-10-28 13:32:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5877 states. [2020-10-28 13:32:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 7093 transitions. [2020-10-28 13:32:32,143 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 7093 transitions. Word has length 255 [2020-10-28 13:32:32,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:32,144 INFO L481 AbstractCegarLoop]: Abstraction has 5877 states and 7093 transitions. [2020-10-28 13:32:32,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:32:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 7093 transitions. [2020-10-28 13:32:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-28 13:32:32,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:32,150 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:32:32,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:32:32,150 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:32,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:32,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1349973640, now seen corresponding path program 1 times [2020-10-28 13:32:32,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:32,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887642390] [2020-10-28 13:32:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:32,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:33,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:33,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:32:33,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:32:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-28 13:32:33,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:33,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:32:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:32:33,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:32:34,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:34,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:34,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:34,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:34,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:34,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:32:34,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:34,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:34,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:34,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:32:34,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:34,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:32:34,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:34,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:34,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:34,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:34,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:34,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:32:34,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:32:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:34,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:32:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:32:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:34,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:32:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:32:34,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:34,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:32:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:32:34,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887642390] [2020-10-28 13:32:34,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:34,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:34,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180101430] [2020-10-28 13:32:34,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:34,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:34,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:34,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:34,716 INFO L87 Difference]: Start difference. First operand 5877 states and 7093 transitions. Second operand 7 states. [2020-10-28 13:32:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:54,005 INFO L93 Difference]: Finished difference Result 14623 states and 17993 transitions. [2020-10-28 13:32:54,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:32:54,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-28 13:32:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:54,046 INFO L225 Difference]: With dead ends: 14623 [2020-10-28 13:32:54,046 INFO L226 Difference]: Without dead ends: 8290 [2020-10-28 13:32:54,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:32:54,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8290 states. [2020-10-28 13:32:54,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8290 to 7812. [2020-10-28 13:32:54,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7812 states. [2020-10-28 13:32:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7812 states to 7812 states and 9563 transitions. [2020-10-28 13:32:54,266 INFO L78 Accepts]: Start accepts. Automaton has 7812 states and 9563 transitions. Word has length 271 [2020-10-28 13:32:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:54,266 INFO L481 AbstractCegarLoop]: Abstraction has 7812 states and 9563 transitions. [2020-10-28 13:32:54,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7812 states and 9563 transitions. [2020-10-28 13:32:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-28 13:32:54,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:54,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:54,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:32:54,273 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:54,274 INFO L82 PathProgramCache]: Analyzing trace with hash 432438853, now seen corresponding path program 1 times [2020-10-28 13:32:54,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:54,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087353432] [2020-10-28 13:32:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:58,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:58,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-28 13:32:58,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:32:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4632 [2020-10-28 13:32:58,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:58,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:32:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:32:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:59,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:59,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:59,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:59,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:59,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:32:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:32:59,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:59,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:59,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:59,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:32:59,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:32:59,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:59,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:32:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:32:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:59,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:59,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:32:59,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 13:32:59,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:59,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:32:59,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:32:59,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087353432] [2020-10-28 13:32:59,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:59,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:59,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039331618] [2020-10-28 13:32:59,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:59,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:59,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:59,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:59,711 INFO L87 Difference]: Start difference. First operand 7812 states and 9563 transitions. Second operand 7 states. [2020-10-28 13:33:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:17,919 INFO L93 Difference]: Finished difference Result 19419 states and 24534 transitions. [2020-10-28 13:33:17,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:33:17,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-28 13:33:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:17,967 INFO L225 Difference]: With dead ends: 19419 [2020-10-28 13:33:17,967 INFO L226 Difference]: Without dead ends: 11613 [2020-10-28 13:33:17,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:33:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11613 states. [2020-10-28 13:33:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11613 to 10615. [2020-10-28 13:33:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10615 states. [2020-10-28 13:33:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10615 states to 10615 states and 12852 transitions. [2020-10-28 13:33:18,232 INFO L78 Accepts]: Start accepts. Automaton has 10615 states and 12852 transitions. Word has length 276 [2020-10-28 13:33:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:18,233 INFO L481 AbstractCegarLoop]: Abstraction has 10615 states and 12852 transitions. [2020-10-28 13:33:18,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:33:18,233 INFO L276 IsEmpty]: Start isEmpty. Operand 10615 states and 12852 transitions. [2020-10-28 13:33:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-28 13:33:18,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:18,239 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:33:18,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:33:18,240 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:18,240 INFO L82 PathProgramCache]: Analyzing trace with hash 439631943, now seen corresponding path program 1 times [2020-10-28 13:33:18,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:18,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764114302] [2020-10-28 13:33:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:23,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:33:23,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:33:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 13:33:23,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:23,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:33:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:33:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:23,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:23,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:33:23,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:23,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:23,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:23,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:33:23,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:23,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:33:23,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:23,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:33:23,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:33:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:23,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:33:23,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 13:33:23,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:23,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:33:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:33:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:33:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:23,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:23,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:33:23,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:33:23,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:23,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:33:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 145 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 13:33:24,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764114302] [2020-10-28 13:33:24,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:33:24,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:33:24,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352605139] [2020-10-28 13:33:24,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:33:24,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:24,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:33:24,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:33:24,150 INFO L87 Difference]: Start difference. First operand 10615 states and 12852 transitions. Second operand 7 states. [2020-10-28 13:33:30,788 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 13:33:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:43,620 INFO L93 Difference]: Finished difference Result 22678 states and 27455 transitions. [2020-10-28 13:33:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:33:43,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-28 13:33:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:43,669 INFO L225 Difference]: With dead ends: 22678 [2020-10-28 13:33:43,669 INFO L226 Difference]: Without dead ends: 12069 [2020-10-28 13:33:43,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:33:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12069 states. [2020-10-28 13:33:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12069 to 12008. [2020-10-28 13:33:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12008 states. [2020-10-28 13:33:44,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12008 states to 12008 states and 14484 transitions. [2020-10-28 13:33:44,100 INFO L78 Accepts]: Start accepts. Automaton has 12008 states and 14484 transitions. Word has length 294 [2020-10-28 13:33:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:44,101 INFO L481 AbstractCegarLoop]: Abstraction has 12008 states and 14484 transitions. [2020-10-28 13:33:44,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:33:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 12008 states and 14484 transitions. [2020-10-28 13:33:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-28 13:33:44,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:44,109 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:44,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:33:44,110 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:44,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:44,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1783036143, now seen corresponding path program 1 times [2020-10-28 13:33:44,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:44,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170272339] [2020-10-28 13:33:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:44,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:46,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:46,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 13:33:46,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:33:46,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2026 [2020-10-28 13:33:46,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:46,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:46,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:46,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:33:46,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:33:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:46,454 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:33:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:46,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:33:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:46,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:46,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:46,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:33:46,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:33:46,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:46,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:46,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:46,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:33:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:46,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:46,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:33:46,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:33:46,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:46,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:46,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:33:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:33:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:46,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:46,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:46,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 13:33:46,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:46,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 13:33:46,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:46,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:46,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:46,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:33:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:33:46,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:33:47,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170272339] [2020-10-28 13:33:47,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:33:47,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:33:47,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689804118] [2020-10-28 13:33:47,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:33:47,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:47,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:33:47,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:33:47,163 INFO L87 Difference]: Start difference. First operand 12008 states and 14484 transitions. Second operand 7 states. [2020-10-28 13:33:50,986 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:33:59,759 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 13:34:14,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:14,502 INFO L93 Difference]: Finished difference Result 31187 states and 37915 transitions. [2020-10-28 13:34:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:34:14,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-28 13:34:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:14,598 INFO L225 Difference]: With dead ends: 31187 [2020-10-28 13:34:14,599 INFO L226 Difference]: Without dead ends: 19185 [2020-10-28 13:34:14,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:34:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19185 states.