/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:06:49,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:06:49,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:06:49,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:06:49,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:06:49,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:06:49,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:06:49,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:06:49,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:06:49,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:06:49,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:06:49,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:06:49,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:06:49,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:06:49,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:06:49,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:06:49,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:06:49,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:06:49,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:06:49,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:06:49,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:06:49,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:06:49,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:06:49,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:06:49,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:06:49,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:06:49,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:06:49,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:06:49,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:06:49,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:06:49,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:06:49,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:06:49,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:06:49,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:06:49,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:06:49,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:06:49,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:06:49,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:06:49,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:06:49,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:06:49,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:06:49,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:06:49,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:06:49,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:06:49,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:06:49,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:06:49,209 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:06:49,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:06:49,209 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:06:49,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:06:49,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:06:49,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:06:49,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:06:49,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:06:49,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:06:49,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:06:49,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:06:49,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:06:49,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:06:49,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:06:49,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:06:49,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:06:49,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:06:49,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:06:49,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:06:49,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:06:49,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:06:49,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:06:49,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:06:49,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:06:49,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:06:49,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:06:49,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:06:49,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:06:49,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:06:49,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:06:49,608 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:06:49,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2020-10-27 19:06:49,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8f07e45/0987b6e2b4f04c75b82bc2f367c1ee6f/FLAGbbca6f9fe [2020-10-27 19:06:50,617 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:06:50,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2020-10-27 19:06:50,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8f07e45/0987b6e2b4f04c75b82bc2f367c1ee6f/FLAGbbca6f9fe [2020-10-27 19:06:50,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8f07e45/0987b6e2b4f04c75b82bc2f367c1ee6f [2020-10-27 19:06:50,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:06:50,738 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:06:50,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:06:50,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:06:50,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:06:50,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:06:50" (1/1) ... [2020-10-27 19:06:50,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f50bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:50, skipping insertion in model container [2020-10-27 19:06:50,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:06:50" (1/1) ... [2020-10-27 19:06:50,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:06:50,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:06:52,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:06:52,028 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:06:52,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:06:52,504 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:06:52,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52 WrapperNode [2020-10-27 19:06:52,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:06:52,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:06:52,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:06:52,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:06:52,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (1/1) ... [2020-10-27 19:06:52,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (1/1) ... [2020-10-27 19:06:52,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (1/1) ... [2020-10-27 19:06:52,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (1/1) ... [2020-10-27 19:06:52,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (1/1) ... [2020-10-27 19:06:52,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (1/1) ... [2020-10-27 19:06:52,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (1/1) ... [2020-10-27 19:06:52,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:06:52,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:06:52,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:06:52,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:06:52,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:06:52,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:06:52,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:06:52,936 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:06:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:06:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:06:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:06:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:06:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:06:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:06:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:06:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:06:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:06:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:06:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:06:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:06:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:06:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:06:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:06:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:06:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:06:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:06:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:06:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:06:56,629 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:06:56,629 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:06:56,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:06:56 BoogieIcfgContainer [2020-10-27 19:06:56,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:06:56,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:06:56,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:06:56,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:06:56,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:06:50" (1/3) ... [2020-10-27 19:06:56,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5201dc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:06:56, skipping insertion in model container [2020-10-27 19:06:56,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:06:52" (2/3) ... [2020-10-27 19:06:56,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5201dc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:06:56, skipping insertion in model container [2020-10-27 19:06:56,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:06:56" (3/3) ... [2020-10-27 19:06:56,646 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label12.c [2020-10-27 19:06:56,658 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:06:56,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:06:56,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:06:56,711 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:06:56,711 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:06:56,711 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:06:56,712 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:06:56,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:06:56,712 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:06:56,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:06:56,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:06:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:06:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 19:06:56,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:56,754 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] [2020-10-27 19:06:56,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:56,761 INFO L82 PathProgramCache]: Analyzing trace with hash 620703208, now seen corresponding path program 1 times [2020-10-27 19:06:56,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:56,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402070439] [2020-10-27 19:06:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:57,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:57,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:06:57,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:57,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-27 19:06:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:06:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:06:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:06:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:06:57,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:57,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:57,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:57,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 19:06:57,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:06:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:57,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402070439] [2020-10-27 19:06:57,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:06:57,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:06:57,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784231750] [2020-10-27 19:06:57,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:06:57,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:57,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:06:57,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:06:57,625 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 19:07:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:06,142 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-27 19:07:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:06,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 19:07:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:06,181 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 19:07:06,181 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 19:07:06,192 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 [2020-10-27 19:07:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 19:07:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-27 19:07:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-27 19:07:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-27 19:07:06,340 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 24 [2020-10-27 19:07:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:06,341 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-27 19:07:06,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:07:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-27 19:07:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 19:07:06,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:06,349 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:07:06,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:07:06,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:06,350 INFO L82 PathProgramCache]: Analyzing trace with hash 692884486, now seen corresponding path program 1 times [2020-10-27 19:07:06,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:06,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904971452] [2020-10-27 19:07:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:06,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:07,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 19:07:07,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-27 19:07:07,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:07,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 19:07:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:07:07,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:07:07,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:07,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:07,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:07:07,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:07,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:07,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:07:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:07,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:07:07,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:07,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 19:07:07,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:07:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:07:07,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904971452] [2020-10-27 19:07:07,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:07,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:07:07,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641139069] [2020-10-27 19:07:07,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:07:07,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:07,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:07:07,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:07:07,679 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 5 states. [2020-10-27 19:07:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:18,672 INFO L93 Difference]: Finished difference Result 4277 states and 7004 transitions. [2020-10-27 19:07:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:18,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-27 19:07:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:18,690 INFO L225 Difference]: With dead ends: 4277 [2020-10-27 19:07:18,690 INFO L226 Difference]: Without dead ends: 2854 [2020-10-27 19:07:18,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:07:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2020-10-27 19:07:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2848. [2020-10-27 19:07:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-27 19:07:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4165 transitions. [2020-10-27 19:07:18,780 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4165 transitions. Word has length 93 [2020-10-27 19:07:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:18,780 INFO L481 AbstractCegarLoop]: Abstraction has 2848 states and 4165 transitions. [2020-10-27 19:07:18,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:07:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4165 transitions. [2020-10-27 19:07:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 19:07:18,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:18,783 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:07:18,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:07:18,783 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:18,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:18,784 INFO L82 PathProgramCache]: Analyzing trace with hash 924696144, now seen corresponding path program 1 times [2020-10-27 19:07:18,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:18,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918288762] [2020-10-27 19:07:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:19,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:19,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 19:07:19,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-27 19:07:19,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:07:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:07:19,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:19,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:19,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:19,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:19,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:07:19,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:19,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:19,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:19,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:19,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:19,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:07:19,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:19,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 19:07:19,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:07:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:07:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:07:19,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918288762] [2020-10-27 19:07:19,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:19,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:07:19,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967125901] [2020-10-27 19:07:19,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:07:19,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:19,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:07:19,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:07:19,737 INFO L87 Difference]: Start difference. First operand 2848 states and 4165 transitions. Second operand 5 states. [2020-10-27 19:07:30,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:30,042 INFO L93 Difference]: Finished difference Result 7124 states and 10746 transitions. [2020-10-27 19:07:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:30,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-27 19:07:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:30,104 INFO L225 Difference]: With dead ends: 7124 [2020-10-27 19:07:30,104 INFO L226 Difference]: Without dead ends: 4282 [2020-10-27 19:07:30,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:07:30,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2020-10-27 19:07:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 4276. [2020-10-27 19:07:30,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-10-27 19:07:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 6026 transitions. [2020-10-27 19:07:30,260 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 6026 transitions. Word has length 94 [2020-10-27 19:07:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:30,263 INFO L481 AbstractCegarLoop]: Abstraction has 4276 states and 6026 transitions. [2020-10-27 19:07:30,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:07:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 6026 transitions. [2020-10-27 19:07:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 19:07:30,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:30,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:07:30,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:07:30,276 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:30,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:30,277 INFO L82 PathProgramCache]: Analyzing trace with hash -725607188, now seen corresponding path program 1 times [2020-10-27 19:07:30,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:30,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893682549] [2020-10-27 19:07:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:30,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:31,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 19:07:31,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:07:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-10-27 19:07:31,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:07:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:07:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:31,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:31,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:31,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:31,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:07:31,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:31,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:31,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:07:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 19:07:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:07:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:07:31,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893682549] [2020-10-27 19:07:31,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:31,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:07:31,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504388555] [2020-10-27 19:07:31,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:07:31,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:31,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:07:31,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:07:31,474 INFO L87 Difference]: Start difference. First operand 4276 states and 6026 transitions. Second operand 5 states. [2020-10-27 19:07:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:44,027 INFO L93 Difference]: Finished difference Result 10682 states and 15503 transitions. [2020-10-27 19:07:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:44,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-27 19:07:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:44,063 INFO L225 Difference]: With dead ends: 10682 [2020-10-27 19:07:44,063 INFO L226 Difference]: Without dead ends: 6412 [2020-10-27 19:07:44,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:07:44,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6412 states. [2020-10-27 19:07:44,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6412 to 6406. [2020-10-27 19:07:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6406 states. [2020-10-27 19:07:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6406 states to 6406 states and 8512 transitions. [2020-10-27 19:07:44,250 INFO L78 Accepts]: Start accepts. Automaton has 6406 states and 8512 transitions. Word has length 112 [2020-10-27 19:07:44,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:44,252 INFO L481 AbstractCegarLoop]: Abstraction has 6406 states and 8512 transitions. [2020-10-27 19:07:44,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:07:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6406 states and 8512 transitions. [2020-10-27 19:07:44,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 19:07:44,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:44,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:07:44,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:07:44,255 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:44,255 INFO L82 PathProgramCache]: Analyzing trace with hash -372328098, now seen corresponding path program 1 times [2020-10-27 19:07:44,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:44,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196451215] [2020-10-27 19:07:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:45,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:45,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 19:07:45,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-27 19:07:45,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 19:07:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:07:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:45,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:45,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:45,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:07:45,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:45,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:45,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:45,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:45,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 19:07:45,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 19:07:45,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 19:07:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:07:45,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196451215] [2020-10-27 19:07:45,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:45,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:07:45,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437548251] [2020-10-27 19:07:45,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:07:45,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:45,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:07:45,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:07:45,276 INFO L87 Difference]: Start difference. First operand 6406 states and 8512 transitions. Second operand 6 states. [2020-10-27 19:07:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:55,119 INFO L93 Difference]: Finished difference Result 14942 states and 20541 transitions. [2020-10-27 19:07:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:55,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-27 19:07:55,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:55,171 INFO L225 Difference]: With dead ends: 14942 [2020-10-27 19:07:55,172 INFO L226 Difference]: Without dead ends: 8542 [2020-10-27 19:07:55,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:07:55,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8542 states. [2020-10-27 19:07:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8542 to 8536. [2020-10-27 19:07:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8536 states. [2020-10-27 19:07:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8536 states to 8536 states and 11747 transitions. [2020-10-27 19:07:55,419 INFO L78 Accepts]: Start accepts. Automaton has 8536 states and 11747 transitions. Word has length 113 [2020-10-27 19:07:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:55,420 INFO L481 AbstractCegarLoop]: Abstraction has 8536 states and 11747 transitions. [2020-10-27 19:07:55,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:07:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8536 states and 11747 transitions. [2020-10-27 19:07:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 19:07:55,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:55,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:07:55,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:07:55,424 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:55,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:55,425 INFO L82 PathProgramCache]: Analyzing trace with hash 44299410, now seen corresponding path program 1 times [2020-10-27 19:07:55,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:55,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041152097] [2020-10-27 19:07:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:55,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:55,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 19:07:55,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-27 19:07:55,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:07:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:07:55,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 19:07:55,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:55,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:07:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:07:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:55,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:56,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:56,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 19:07:56,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 19:07:56,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 19:07:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:07:56,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041152097] [2020-10-27 19:07:56,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:07:56,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:07:56,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647818351] [2020-10-27 19:07:56,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:07:56,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:56,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:07:56,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:07:56,172 INFO L87 Difference]: Start difference. First operand 8536 states and 11747 transitions. Second operand 7 states. [2020-10-27 19:08:10,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:10,957 INFO L93 Difference]: Finished difference Result 25793 states and 36312 transitions. [2020-10-27 19:08:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:08:10,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-27 19:08:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:11,014 INFO L225 Difference]: With dead ends: 25793 [2020-10-27 19:08:11,015 INFO L226 Difference]: Without dead ends: 15133 [2020-10-27 19:08:11,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:08:11,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2020-10-27 19:08:11,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 11583. [2020-10-27 19:08:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11583 states. [2020-10-27 19:08:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11583 states to 11583 states and 15618 transitions. [2020-10-27 19:08:11,345 INFO L78 Accepts]: Start accepts. Automaton has 11583 states and 15618 transitions. Word has length 119 [2020-10-27 19:08:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:11,345 INFO L481 AbstractCegarLoop]: Abstraction has 11583 states and 15618 transitions. [2020-10-27 19:08:11,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:08:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 11583 states and 15618 transitions. [2020-10-27 19:08:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 19:08:11,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:11,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:08:11,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:08:11,349 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:11,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1161634152, now seen corresponding path program 1 times [2020-10-27 19:08:11,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:11,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990038775] [2020-10-27 19:08:11,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:12,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:12,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 19:08:12,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:08:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-27 19:08:12,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:08:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 19:08:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:08:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:08:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:12,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:12,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:08:12,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:08:12,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:08:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:12,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:12,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:08:12,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 19:08:12,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:08:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:08:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:08:12,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990038775] [2020-10-27 19:08:12,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:08:12,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:08:12,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711381344] [2020-10-27 19:08:12,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:08:12,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:08:12,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:08:12,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:08:12,840 INFO L87 Difference]: Start difference. First operand 11583 states and 15618 transitions. Second operand 5 states. [2020-10-27 19:08:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:30,203 INFO L93 Difference]: Finished difference Result 33114 states and 45399 transitions. [2020-10-27 19:08:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:08:30,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 19:08:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:30,281 INFO L225 Difference]: With dead ends: 33114 [2020-10-27 19:08:30,281 INFO L226 Difference]: Without dead ends: 21537 [2020-10-27 19:08:30,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:08:30,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21537 states. [2020-10-27 19:08:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21537 to 20829. [2020-10-27 19:08:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20829 states. [2020-10-27 19:08:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20829 states to 20829 states and 26355 transitions. [2020-10-27 19:08:30,833 INFO L78 Accepts]: Start accepts. Automaton has 20829 states and 26355 transitions. Word has length 146 [2020-10-27 19:08:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:30,834 INFO L481 AbstractCegarLoop]: Abstraction has 20829 states and 26355 transitions. [2020-10-27 19:08:30,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:08:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20829 states and 26355 transitions. [2020-10-27 19:08:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-27 19:08:30,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:30,838 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:08:30,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:08:30,839 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:30,839 INFO L82 PathProgramCache]: Analyzing trace with hash -359032834, now seen corresponding path program 1 times [2020-10-27 19:08:30,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:30,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127801526] [2020-10-27 19:08:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:33,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:33,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 19:08:33,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:08:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2564 [2020-10-27 19:08:33,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:08:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-27 19:08:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:08:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:33,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:08:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:33,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:33,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:08:33,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:08:33,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:08:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:33,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:33,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:08:33,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 19:08:33,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:08:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:33,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:33,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:08:33,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 19:08:33,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:08:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 19:08:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 19:08:33,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127801526] [2020-10-27 19:08:33,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:08:33,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:08:33,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102847123] [2020-10-27 19:08:33,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:08:33,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:08:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:08:33,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:08:33,881 INFO L87 Difference]: Start difference. First operand 20829 states and 26355 transitions. Second operand 5 states. [2020-10-27 19:08:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:45,463 INFO L93 Difference]: Finished difference Result 53633 states and 69615 transitions. [2020-10-27 19:08:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:08:45,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-27 19:08:45,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:45,563 INFO L225 Difference]: With dead ends: 53633 [2020-10-27 19:08:45,563 INFO L226 Difference]: Without dead ends: 32810 [2020-10-27 19:08:45,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:08:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32810 states. [2020-10-27 19:08:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32810 to 32806. [2020-10-27 19:08:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32806 states. [2020-10-27 19:08:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32806 states to 32806 states and 39825 transitions. [2020-10-27 19:08:46,267 INFO L78 Accepts]: Start accepts. Automaton has 32806 states and 39825 transitions. Word has length 219 [2020-10-27 19:08:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:46,267 INFO L481 AbstractCegarLoop]: Abstraction has 32806 states and 39825 transitions. [2020-10-27 19:08:46,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:08:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 32806 states and 39825 transitions. [2020-10-27 19:08:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-27 19:08:46,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:46,276 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 19:08:46,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:08:46,276 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:46,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:46,277 INFO L82 PathProgramCache]: Analyzing trace with hash -508332100, now seen corresponding path program 1 times [2020-10-27 19:08:46,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:46,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902045598] [2020-10-27 19:08:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:46,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:50,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:50,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-27 19:08:50,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:08:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4250 [2020-10-27 19:08:50,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:08:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-27 19:08:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 19:08:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:08:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:08:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:50,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:50,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:08:50,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:08:50,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:08:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:50,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:50,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:08:50,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 19:08:50,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:50,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:08:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:50,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:50,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:08:50,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 19:08:50,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:08:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 19:08:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:50,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-27 19:08:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:51,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:51,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 19:08:51,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 19:08:51,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:08:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:08:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 19:08:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 19:08:51,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902045598] [2020-10-27 19:08:51,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:08:51,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:08:51,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249443214] [2020-10-27 19:08:51,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:08:51,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:08:51,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:08:51,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:08:51,280 INFO L87 Difference]: Start difference. First operand 32806 states and 39825 transitions. Second operand 7 states. [2020-10-27 19:09:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:09:09,067 INFO L93 Difference]: Finished difference Result 75926 states and 93252 transitions. [2020-10-27 19:09:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:09:09,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-27 19:09:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:09:09,171 INFO L225 Difference]: With dead ends: 75926 [2020-10-27 19:09:09,172 INFO L226 Difference]: Without dead ends: 40204 [2020-10-27 19:09:09,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:09:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40204 states. [2020-10-27 19:09:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40204 to 40200. [2020-10-27 19:09:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40200 states. [2020-10-27 19:09:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40200 states to 40200 states and 44630 transitions. [2020-10-27 19:09:09,990 INFO L78 Accepts]: Start accepts. Automaton has 40200 states and 44630 transitions. Word has length 314 [2020-10-27 19:09:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:09:09,990 INFO L481 AbstractCegarLoop]: Abstraction has 40200 states and 44630 transitions. [2020-10-27 19:09:09,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:09:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 40200 states and 44630 transitions. [2020-10-27 19:09:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-27 19:09:09,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:09:09,997 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:09:09,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:09:09,998 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:09:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:09:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 232427378, now seen corresponding path program 1 times [2020-10-27 19:09:09,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:09:09,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789065161] [2020-10-27 19:09:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:09:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:15,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:15,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-27 19:09:15,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:09:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 19:09:15,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-27 19:09:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 19:09:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:09:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:15,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:15,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:15,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:09:15,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:09:15,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:09:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:15,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:15,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:09:15,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:15,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:09:15,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:09:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:15,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:15,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 19:09:15,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 19:09:15,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:09:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 19:09:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:09:15,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 19:09:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:15,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:15,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 19:09:15,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:15,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 19:09:15,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:09:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 19:09:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:09:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 19:09:15,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789065161] [2020-10-27 19:09:15,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:09:15,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:09:15,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584763832] [2020-10-27 19:09:15,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:09:15,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:09:15,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:09:15,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:09:15,938 INFO L87 Difference]: Start difference. First operand 40200 states and 44630 transitions. Second operand 7 states. [2020-10-27 19:09:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:09:28,255 INFO L93 Difference]: Finished difference Result 102527 states and 115644 transitions. [2020-10-27 19:09:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:09:28,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-27 19:09:28,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:09:28,418 INFO L225 Difference]: With dead ends: 102527 [2020-10-27 19:09:28,419 INFO L226 Difference]: Without dead ends: 61630 [2020-10-27 19:09:28,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:09:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61630 states. [2020-10-27 19:09:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61630 to 60921. [2020-10-27 19:09:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60921 states. [2020-10-27 19:09:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60921 states to 60921 states and 68252 transitions. [2020-10-27 19:09:30,032 INFO L78 Accepts]: Start accepts. Automaton has 60921 states and 68252 transitions. Word has length 347 [2020-10-27 19:09:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:09:30,033 INFO L481 AbstractCegarLoop]: Abstraction has 60921 states and 68252 transitions. [2020-10-27 19:09:30,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:09:30,033 INFO L276 IsEmpty]: Start isEmpty. Operand 60921 states and 68252 transitions. [2020-10-27 19:09:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-27 19:09:30,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:09:30,046 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:09:30,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:09:30,047 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:09:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:09:30,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2047957092, now seen corresponding path program 1 times [2020-10-27 19:09:30,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:09:30,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979442183] [2020-10-27 19:09:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:09:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:30,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:34,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:34,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-27 19:09:34,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:09:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4293 [2020-10-27 19:09:34,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 355 [2020-10-27 19:09:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 19:09:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:09:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:34,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:34,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:09:34,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:09:34,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:09:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:34,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:34,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:09:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:09:34,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:09:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:35,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 19:09:35,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:35,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 19:09:35,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:09:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 19:09:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-27 19:09:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:35,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:35,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 19:09:35,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 19:09:35,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:09:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 19:09:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-27 19:09:35,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979442183] [2020-10-27 19:09:35,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:09:35,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:09:35,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522193058] [2020-10-27 19:09:35,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:09:35,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:09:35,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:09:35,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:09:35,603 INFO L87 Difference]: Start difference. First operand 60921 states and 68252 transitions. Second operand 7 states. [2020-10-27 19:09:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:09:48,000 INFO L93 Difference]: Finished difference Result 129171 states and 146532 transitions. [2020-10-27 19:09:48,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:09:48,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-27 19:09:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:09:48,199 INFO L225 Difference]: With dead ends: 129171 [2020-10-27 19:09:48,200 INFO L226 Difference]: Without dead ends: 68260 [2020-10-27 19:09:48,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:09:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68260 states. [2020-10-27 19:09:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68260 to 68260. [2020-10-27 19:09:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68260 states. [2020-10-27 19:09:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68260 states to 68260 states and 76236 transitions. [2020-10-27 19:09:49,986 INFO L78 Accepts]: Start accepts. Automaton has 68260 states and 76236 transitions. Word has length 462 [2020-10-27 19:09:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:09:49,986 INFO L481 AbstractCegarLoop]: Abstraction has 68260 states and 76236 transitions. [2020-10-27 19:09:49,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:09:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 68260 states and 76236 transitions. [2020-10-27 19:09:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-27 19:09:50,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:09:50,015 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:09:50,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:09:50,015 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:09:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:09:50,016 INFO L82 PathProgramCache]: Analyzing trace with hash 833390334, now seen corresponding path program 1 times [2020-10-27 19:09:50,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:09:50,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324924604] [2020-10-27 19:09:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:09:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:50,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:55,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:55,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 719 [2020-10-27 19:09:55,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:09:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 19:09:55,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 369 [2020-10-27 19:09:55,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-27 19:09:55,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:55,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:09:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:55,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:55,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:09:55,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:55,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:09:55,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:55,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:55,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:09:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:55,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:55,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:09:55,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:09:55,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:55,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:09:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:55,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:55,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:55,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-27 19:09:55,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:55,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 19:09:55,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:09:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:09:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-10-27 19:09:55,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-27 19:09:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:56,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:56,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:56,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 19:09:56,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-27 19:09:56,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:09:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:09:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-27 19:09:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:09:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-10-27 19:09:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:09:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:09:56,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:09:56,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 19:09:56,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:09:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 19:09:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:09:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:09:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 19:09:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:09:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:09:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 418 proven. 94 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-27 19:09:56,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324924604] [2020-10-27 19:09:56,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:09:56,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:09:56,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399246220] [2020-10-27 19:09:56,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:09:56,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:09:56,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:09:56,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:09:56,932 INFO L87 Difference]: Start difference. First operand 68260 states and 76236 transitions. Second operand 7 states. [2020-10-27 19:10:12,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:10:12,437 INFO L93 Difference]: Finished difference Result 152169 states and 170740 transitions. [2020-10-27 19:10:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:10:12,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 701 [2020-10-27 19:10:12,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:10:12,678 INFO L225 Difference]: With dead ends: 152169 [2020-10-27 19:10:12,678 INFO L226 Difference]: Without dead ends: 83919 [2020-10-27 19:10:12,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:10:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83919 states. [2020-10-27 19:10:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83919 to 79664. [2020-10-27 19:10:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79664 states. [2020-10-27 19:10:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79664 states to 79664 states and 88644 transitions. [2020-10-27 19:10:14,902 INFO L78 Accepts]: Start accepts. Automaton has 79664 states and 88644 transitions. Word has length 701 [2020-10-27 19:10:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:10:14,904 INFO L481 AbstractCegarLoop]: Abstraction has 79664 states and 88644 transitions. [2020-10-27 19:10:14,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:10:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 79664 states and 88644 transitions. [2020-10-27 19:10:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2020-10-27 19:10:14,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:10:14,924 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:10:14,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:10:14,924 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:10:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:10:14,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1490539683, now seen corresponding path program 1 times [2020-10-27 19:10:14,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:10:14,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352197019] [2020-10-27 19:10:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:10:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:20,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:20,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 751 [2020-10-27 19:10:20,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:10:20,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 19:10:20,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:10:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 19:10:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 494 [2020-10-27 19:10:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:20,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:10:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:20,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:20,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:10:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:10:20,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:10:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:10:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:10:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:20,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:20,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:20,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:10:20,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 19:10:20,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:10:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:10:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:10:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:10:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:21,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:21,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-27 19:10:21,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-27 19:10:21,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:10:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:10:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 495 [2020-10-27 19:10:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:21,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:10:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:21,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:21,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 19:10:21,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 19:10:21,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:10:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:10:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 19:10:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2020-10-27 19:10:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:10:22,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:10:22,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:10:22,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 19:10:22,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:10:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 19:10:22,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:10:22,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:10:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 19:10:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:10:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:10:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 171 proven. 94 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-27 19:10:22,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352197019] [2020-10-27 19:10:22,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:10:22,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:10:22,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897023927] [2020-10-27 19:10:22,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:10:22,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:10:22,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:10:22,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:10:22,624 INFO L87 Difference]: Start difference. First operand 79664 states and 88644 transitions. Second operand 7 states.