/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:11:47,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:11:47,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:11:47,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:11:47,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:11:47,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:11:47,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:11:47,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:11:47,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:11:47,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:11:47,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:11:47,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:11:47,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:11:47,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:11:47,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:11:47,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:11:47,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:11:47,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:11:47,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:11:47,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:11:47,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:11:47,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:11:47,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:11:47,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:11:47,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:11:47,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:11:47,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:11:47,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:11:47,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:11:47,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:11:47,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:11:47,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:11:47,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:11:47,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:11:47,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:11:47,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:11:47,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:11:47,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:11:47,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:11:47,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:11:47,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:11:47,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:11:47,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:11:47,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:11:47,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:11:47,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:11:47,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:11:47,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:11:47,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:11:47,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:11:47,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:11:47,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:11:47,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:11:47,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:11:47,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:11:47,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:11:47,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:11:47,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:11:47,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:11:47,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:11:47,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:11:47,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:11:47,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:11:47,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:11:47,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:11:47,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:11:47,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:11:47,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:11:47,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:11:47,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:11:47,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:11:47,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:11:48,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:11:48,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:11:48,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:11:48,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:11:48,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:11:48,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label51.c [2020-10-28 13:11:48,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1629900ff/68063085a6df4e72878f1a11d78f5734/FLAG0604bca34 [2020-10-28 13:11:49,513 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:11:49,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label51.c [2020-10-28 13:11:49,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1629900ff/68063085a6df4e72878f1a11d78f5734/FLAG0604bca34 [2020-10-28 13:11:50,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1629900ff/68063085a6df4e72878f1a11d78f5734 [2020-10-28 13:11:50,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:11:50,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:11:50,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:11:50,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:11:50,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:11:50,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:11:50" (1/1) ... [2020-10-28 13:11:50,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305c2c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:50, skipping insertion in model container [2020-10-28 13:11:50,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:11:50" (1/1) ... [2020-10-28 13:11:50,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:11:50,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:11:51,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:11:51,196 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:11:51,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:11:51,490 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:11:51,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51 WrapperNode [2020-10-28 13:11:51,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:11:51,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:11:51,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:11:51,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:11:51,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (1/1) ... [2020-10-28 13:11:51,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (1/1) ... [2020-10-28 13:11:51,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (1/1) ... [2020-10-28 13:11:51,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (1/1) ... [2020-10-28 13:11:51,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (1/1) ... [2020-10-28 13:11:51,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (1/1) ... [2020-10-28 13:11:51,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (1/1) ... [2020-10-28 13:11:51,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:11:51,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:11:51,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:11:51,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:11:51,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:11:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:11:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:11:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:11:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:11:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:11:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:11:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:11:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:11:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:11:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:11:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:11:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:11:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:11:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:11:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:11:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:11:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:11:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:11:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:11:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:11:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:11:55,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:11:55,099 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:11:55,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:11:55 BoogieIcfgContainer [2020-10-28 13:11:55,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:11:55,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:11:55,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:11:55,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:11:55,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:11:50" (1/3) ... [2020-10-28 13:11:55,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f5396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:11:55, skipping insertion in model container [2020-10-28 13:11:55,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:51" (2/3) ... [2020-10-28 13:11:55,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f5396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:11:55, skipping insertion in model container [2020-10-28 13:11:55,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:11:55" (3/3) ... [2020-10-28 13:11:55,116 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label51.c [2020-10-28 13:11:55,130 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:11:55,139 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:11:55,155 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:11:55,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:11:55,203 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:11:55,203 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:11:55,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:11:55,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:11:55,204 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:11:55,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:11:55,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:11:55,249 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:11:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 13:11:55,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:55,260 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] [2020-10-28 13:11:55,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:55,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:55,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2124106695, now seen corresponding path program 1 times [2020-10-28 13:11:55,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:55,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746831493] [2020-10-28 13:11:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:55,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:56,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:56,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 13:11:56,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:56,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-28 13:11:56,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:56,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:56,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 13:11:56,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:11:56,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:56,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:56,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:11:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:56,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:56,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746831493] [2020-10-28 13:11:56,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:56,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:11:56,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662518298] [2020-10-28 13:11:56,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:11:56,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:56,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:11:56,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:11:56,351 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:12:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:05,712 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-28 13:12:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:12:05,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 13:12:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:05,737 INFO L225 Difference]: With dead ends: 1250 [2020-10-28 13:12:05,737 INFO L226 Difference]: Without dead ends: 730 [2020-10-28 13:12:05,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:12:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-28 13:12:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-28 13:12:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-28 13:12:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-28 13:12:05,884 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 23 [2020-10-28 13:12:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:05,885 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-28 13:12:05,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:12:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-28 13:12:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 13:12:05,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:05,891 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:12:05,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:12:05,891 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:05,892 INFO L82 PathProgramCache]: Analyzing trace with hash -328255535, now seen corresponding path program 1 times [2020-10-28 13:12:05,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:05,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293975082] [2020-10-28 13:12:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:07,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:07,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 13:12:07,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-10-28 13:12:07,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:07,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:12:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:12:07,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:07,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:07,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:07,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:07,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:07,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:12:07,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:07,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:12:07,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:07,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:08,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:08,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:12:08,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:08,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 13:12:08,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:08,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:08,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:12:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:12:08,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293975082] [2020-10-28 13:12:08,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:12:08,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:12:08,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092406024] [2020-10-28 13:12:08,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:08,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:08,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:08,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:08,325 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 7 states. [2020-10-28 13:12:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:18,366 INFO L93 Difference]: Finished difference Result 1776 states and 3021 transitions. [2020-10-28 13:12:18,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:12:18,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-28 13:12:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:18,375 INFO L225 Difference]: With dead ends: 1776 [2020-10-28 13:12:18,375 INFO L226 Difference]: Without dead ends: 1069 [2020-10-28 13:12:18,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:12:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-28 13:12:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1042. [2020-10-28 13:12:18,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-28 13:12:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1663 transitions. [2020-10-28 13:12:18,475 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1663 transitions. Word has length 92 [2020-10-28 13:12:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:18,476 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1663 transitions. [2020-10-28 13:12:18,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1663 transitions. [2020-10-28 13:12:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 13:12:18,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:18,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:18,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:12:18,494 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:18,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:18,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1574759087, now seen corresponding path program 1 times [2020-10-28 13:12:18,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:18,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822987413] [2020-10-28 13:12:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:18,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:18,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:19,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 13:12:19,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:12:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-28 13:12:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:19,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:12:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:19,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:19,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:19,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:19,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:12:19,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:19,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:19,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:19,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:19,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:12:19,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:19,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 13:12:19,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:19,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:12:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:12:20,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822987413] [2020-10-28 13:12:20,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:12:20,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:12:20,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008705313] [2020-10-28 13:12:20,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:20,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:20,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:20,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:20,015 INFO L87 Difference]: Start difference. First operand 1042 states and 1663 transitions. Second operand 7 states. [2020-10-28 13:12:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:27,931 INFO L93 Difference]: Finished difference Result 2759 states and 4517 transitions. [2020-10-28 13:12:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:12:27,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-28 13:12:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:27,951 INFO L225 Difference]: With dead ends: 2759 [2020-10-28 13:12:27,951 INFO L226 Difference]: Without dead ends: 1723 [2020-10-28 13:12:27,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:12:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-28 13:12:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1658. [2020-10-28 13:12:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-28 13:12:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2310 transitions. [2020-10-28 13:12:28,031 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2310 transitions. Word has length 93 [2020-10-28 13:12:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:28,032 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2310 transitions. [2020-10-28 13:12:28,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:28,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2310 transitions. [2020-10-28 13:12:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 13:12:28,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:28,034 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:12:28,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:12:28,034 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:28,035 INFO L82 PathProgramCache]: Analyzing trace with hash -908781065, now seen corresponding path program 1 times [2020-10-28 13:12:28,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:28,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398479152] [2020-10-28 13:12:28,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:28,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:28,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 13:12:28,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-10-28 13:12:28,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:28,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:28,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:12:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:28,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:28,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:12:28,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:28,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:28,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:29,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:29,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:12:29,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:12:29,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:29,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:12:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:12:29,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398479152] [2020-10-28 13:12:29,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:12:29,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:12:29,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673725223] [2020-10-28 13:12:29,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:29,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:29,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:29,206 INFO L87 Difference]: Start difference. First operand 1658 states and 2310 transitions. Second operand 7 states. [2020-10-28 13:12:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:41,319 INFO L93 Difference]: Finished difference Result 4296 states and 6215 transitions. [2020-10-28 13:12:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:12:41,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-28 13:12:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:41,339 INFO L225 Difference]: With dead ends: 4296 [2020-10-28 13:12:41,340 INFO L226 Difference]: Without dead ends: 2951 [2020-10-28 13:12:41,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:12:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-10-28 13:12:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2293. [2020-10-28 13:12:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2293 states. [2020-10-28 13:12:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3046 transitions. [2020-10-28 13:12:41,441 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3046 transitions. Word has length 97 [2020-10-28 13:12:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:41,441 INFO L481 AbstractCegarLoop]: Abstraction has 2293 states and 3046 transitions. [2020-10-28 13:12:41,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3046 transitions. [2020-10-28 13:12:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-28 13:12:41,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:41,447 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:12:41,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:12:41,448 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:41,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1652928805, now seen corresponding path program 1 times [2020-10-28 13:12:41,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:41,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429783393] [2020-10-28 13:12:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:42,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:42,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-28 13:12:42,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:42,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-10-28 13:12:42,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:42,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:42,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:42,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:12:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 13:12:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:43,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:43,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:43,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:43,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:43,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:12:43,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:43,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:43,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:43,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:12:43,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-28 13:12:43,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:43,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:12:43,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:12:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:12:43,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429783393] [2020-10-28 13:12:43,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:43,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:12:43,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357844490] [2020-10-28 13:12:43,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:12:43,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:43,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:12:43,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:12:43,906 INFO L87 Difference]: Start difference. First operand 2293 states and 3046 transitions. Second operand 5 states. [2020-10-28 13:12:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:51,797 INFO L93 Difference]: Finished difference Result 5196 states and 7229 transitions. [2020-10-28 13:12:51,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:12:51,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-28 13:12:51,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:51,824 INFO L225 Difference]: With dead ends: 5196 [2020-10-28 13:12:51,824 INFO L226 Difference]: Without dead ends: 3847 [2020-10-28 13:12:51,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:12:51,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2020-10-28 13:12:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3227. [2020-10-28 13:12:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3227 states. [2020-10-28 13:12:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4135 transitions. [2020-10-28 13:12:51,934 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4135 transitions. Word has length 297 [2020-10-28 13:12:51,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:51,936 INFO L481 AbstractCegarLoop]: Abstraction has 3227 states and 4135 transitions. [2020-10-28 13:12:51,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:12:51,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4135 transitions. [2020-10-28 13:12:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-28 13:12:51,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:51,946 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 13:12:51,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:12:51,947 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:51,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1635157987, now seen corresponding path program 1 times [2020-10-28 13:12:51,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:51,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642451178] [2020-10-28 13:12:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:57,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:57,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-28 13:12:57,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:12:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 13:12:57,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:57,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:57,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:12:57,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:57,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:57,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:57,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:12:57,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:57,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:57,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:57,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:57,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:12:57,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-28 13:12:57,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:57,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:12:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:12:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:58,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:58,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:12:58,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:58,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:12:58,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:58,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 13:12:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:58,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-28 13:12:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:58,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:58,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:12:58,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:12:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:58,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:12:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 45 proven. 156 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 13:12:58,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642451178] [2020-10-28 13:12:58,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:58,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:58,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856909246] [2020-10-28 13:12:58,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:58,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:58,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:58,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:58,723 INFO L87 Difference]: Start difference. First operand 3227 states and 4135 transitions. Second operand 7 states. [2020-10-28 13:13:02,245 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 13:13:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:08,375 INFO L93 Difference]: Finished difference Result 6817 states and 8701 transitions. [2020-10-28 13:13:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:13:08,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-10-28 13:13:08,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:08,396 INFO L225 Difference]: With dead ends: 6817 [2020-10-28 13:13:08,396 INFO L226 Difference]: Without dead ends: 3596 [2020-10-28 13:13:08,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:13:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2020-10-28 13:13:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3548. [2020-10-28 13:13:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3548 states. [2020-10-28 13:13:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4473 transitions. [2020-10-28 13:13:08,525 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4473 transitions. Word has length 389 [2020-10-28 13:13:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:08,526 INFO L481 AbstractCegarLoop]: Abstraction has 3548 states and 4473 transitions. [2020-10-28 13:13:08,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4473 transitions. [2020-10-28 13:13:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-28 13:13:08,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:08,536 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:08,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:13:08,536 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:08,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:08,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1204787250, now seen corresponding path program 1 times [2020-10-28 13:13:08,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:08,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722050715] [2020-10-28 13:13:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:10,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:10,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-28 13:13:10,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:10,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-10-28 13:13:10,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:10,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:13:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 13:13:10,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:10,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:10,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:10,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:13:10,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:10,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:10,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:10,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:11,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:11,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:13:11,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:11,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 13:13:11,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:11,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:13:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:11,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:13:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:11,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:11,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:13:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-28 13:13:11,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:11,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:11,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:13:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:13:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:13:12,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722050715] [2020-10-28 13:13:12,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:12,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:13:12,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019865168] [2020-10-28 13:13:12,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:13:12,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:12,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:13:12,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:13:12,016 INFO L87 Difference]: Start difference. First operand 3548 states and 4473 transitions. Second operand 8 states. [2020-10-28 13:13:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:31,055 INFO L93 Difference]: Finished difference Result 9666 states and 13125 transitions. [2020-10-28 13:13:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:13:31,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 396 [2020-10-28 13:13:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:31,092 INFO L225 Difference]: With dead ends: 9666 [2020-10-28 13:13:31,093 INFO L226 Difference]: Without dead ends: 6431 [2020-10-28 13:13:31,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:13:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6431 states. [2020-10-28 13:13:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6431 to 6405. [2020-10-28 13:13:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6405 states. [2020-10-28 13:13:31,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6405 states to 6405 states and 8311 transitions. [2020-10-28 13:13:31,302 INFO L78 Accepts]: Start accepts. Automaton has 6405 states and 8311 transitions. Word has length 396 [2020-10-28 13:13:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:31,303 INFO L481 AbstractCegarLoop]: Abstraction has 6405 states and 8311 transitions. [2020-10-28 13:13:31,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:13:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6405 states and 8311 transitions. [2020-10-28 13:13:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-28 13:13:31,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:31,319 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:13:31,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:13:31,319 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash -979484511, now seen corresponding path program 1 times [2020-10-28 13:13:31,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:31,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027462504] [2020-10-28 13:13:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:31,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:31,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:32,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:36,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:36,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-28 13:13:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:13:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-28 13:13:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:36,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:13:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:13:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 13:13:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:36,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:36,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:36,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:13:36,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:36,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:36,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:36,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:13:36,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:36,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:13:36,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:36,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:13:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:36,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:13:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:37,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:37,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:37,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:37,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:13:37,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-28 13:13:37,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:37,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:37,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:13:37,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-28 13:13:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:38,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:38,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:13:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:13:38,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:38,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:13:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:38,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-28 13:13:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:38,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:38,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:13:38,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:38,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:13:38,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:38,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:38,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 13:13:38,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 237 proven. 247 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-28 13:13:38,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027462504] [2020-10-28 13:13:38,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:38,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:13:38,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901866226] [2020-10-28 13:13:38,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:13:38,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:38,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:13:38,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:13:38,711 INFO L87 Difference]: Start difference. First operand 6405 states and 8311 transitions. Second operand 8 states. [2020-10-28 13:13:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:54,423 INFO L93 Difference]: Finished difference Result 16704 states and 23384 transitions. [2020-10-28 13:13:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:13:54,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 496 [2020-10-28 13:13:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:54,502 INFO L225 Difference]: With dead ends: 16704 [2020-10-28 13:13:54,503 INFO L226 Difference]: Without dead ends: 10294 [2020-10-28 13:13:54,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:13:54,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10294 states. [2020-10-28 13:13:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10294 to 8990. [2020-10-28 13:13:54,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-28 13:13:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 11531 transitions. [2020-10-28 13:13:54,889 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 11531 transitions. Word has length 496 [2020-10-28 13:13:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:54,890 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 11531 transitions. [2020-10-28 13:13:54,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:13:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 11531 transitions. [2020-10-28 13:13:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-28 13:13:54,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:54,910 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 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] [2020-10-28 13:13:54,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:13:54,910 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:54,911 INFO L82 PathProgramCache]: Analyzing trace with hash 211033210, now seen corresponding path program 1 times [2020-10-28 13:13:54,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:54,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823530852] [2020-10-28 13:13:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:00,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-28 13:14:00,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:14:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:14:00,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:00,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:14:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 13:14:00,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:00,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:00,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:00,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:14:00,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:00,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:00,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:00,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:14:00,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:14:00,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:00,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:00,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:14:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:14:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:00,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:00,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:14:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:01,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:01,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:01,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:14:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:01,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:14:01,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 220 proven. 16 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:14:01,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823530852] [2020-10-28 13:14:01,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:01,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:14:01,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476930638] [2020-10-28 13:14:01,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:14:01,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:01,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:14:01,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:14:01,392 INFO L87 Difference]: Start difference. First operand 8990 states and 11531 transitions. Second operand 6 states. [2020-10-28 13:14:03,579 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:14:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:11,828 INFO L93 Difference]: Finished difference Result 18427 states and 26337 transitions. [2020-10-28 13:14:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:14:11,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 507 [2020-10-28 13:14:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:11,884 INFO L225 Difference]: With dead ends: 18427 [2020-10-28 13:14:11,885 INFO L226 Difference]: Without dead ends: 11305 [2020-10-28 13:14:11,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:14:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11305 states. [2020-10-28 13:14:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11305 to 11188. [2020-10-28 13:14:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11188 states. [2020-10-28 13:14:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11188 states to 11188 states and 14524 transitions. [2020-10-28 13:14:12,245 INFO L78 Accepts]: Start accepts. Automaton has 11188 states and 14524 transitions. Word has length 507 [2020-10-28 13:14:12,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:12,246 INFO L481 AbstractCegarLoop]: Abstraction has 11188 states and 14524 transitions. [2020-10-28 13:14:12,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:14:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 11188 states and 14524 transitions. [2020-10-28 13:14:12,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-28 13:14:12,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:12,265 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:12,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:14:12,265 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:12,266 INFO L82 PathProgramCache]: Analyzing trace with hash 831436165, now seen corresponding path program 1 times [2020-10-28 13:14:12,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:12,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110991106] [2020-10-28 13:14:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:12,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-28 13:14:16,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:14:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3802 [2020-10-28 13:14:16,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:16,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:14:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:14:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:16,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:16,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:16,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:16,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:14:16,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:16,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:16,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:16,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:16,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:14:16,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 13:14:16,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:16,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:16,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:14:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:16,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:16,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:16,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:14:16,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:16,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:16,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:14:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:16,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:17,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:17,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:14:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:14:17,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:17,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:14:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:14:17,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110991106] [2020-10-28 13:14:17,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:17,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:17,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291669030] [2020-10-28 13:14:17,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:17,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:17,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:17,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:17,469 INFO L87 Difference]: Start difference. First operand 11188 states and 14524 transitions. Second operand 7 states. [2020-10-28 13:14:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:31,116 INFO L93 Difference]: Finished difference Result 24570 states and 33716 transitions. [2020-10-28 13:14:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:14:31,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-28 13:14:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:31,188 INFO L225 Difference]: With dead ends: 24570 [2020-10-28 13:14:31,188 INFO L226 Difference]: Without dead ends: 15250 [2020-10-28 13:14:31,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:14:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15250 states. [2020-10-28 13:14:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15250 to 14921. [2020-10-28 13:14:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14921 states. [2020-10-28 13:14:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14921 states to 14921 states and 19920 transitions. [2020-10-28 13:14:31,633 INFO L78 Accepts]: Start accepts. Automaton has 14921 states and 19920 transitions. Word has length 536 [2020-10-28 13:14:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:31,634 INFO L481 AbstractCegarLoop]: Abstraction has 14921 states and 19920 transitions. [2020-10-28 13:14:31,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 14921 states and 19920 transitions. [2020-10-28 13:14:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2020-10-28 13:14:31,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:31,664 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:31,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:14:31,665 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:31,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:31,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1406033787, now seen corresponding path program 1 times [2020-10-28 13:14:31,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:31,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72711185] [2020-10-28 13:14:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:31,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:36,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:36,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 636 [2020-10-28 13:14:36,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:14:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 13:14:36,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:36,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:14:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:14:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:37,086 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:14:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:37,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:37,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:37,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:14:37,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:37,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:37,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:37,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:14:37,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:37,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-28 13:14:37,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:37,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:14:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:14:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:37,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:37,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:37,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-28 13:14:37,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:37,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:14:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:38,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:14:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:38,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:14:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:14:38,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:38,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 13:14:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-28 13:14:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:38,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:14:38,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:14:38,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:38,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 13:14:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 176 proven. 189 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-28 13:14:39,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72711185] [2020-10-28 13:14:39,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:39,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:39,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296494273] [2020-10-28 13:14:39,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:39,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:39,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:39,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:39,063 INFO L87 Difference]: Start difference. First operand 14921 states and 19920 transitions. Second operand 7 states. [2020-10-28 13:14:41,812 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:14:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:55,567 INFO L93 Difference]: Finished difference Result 31462 states and 42119 transitions. [2020-10-28 13:14:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:14:55,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 618 [2020-10-28 13:14:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:55,638 INFO L225 Difference]: With dead ends: 31462 [2020-10-28 13:14:55,639 INFO L226 Difference]: Without dead ends: 16854 [2020-10-28 13:14:55,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:14:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16854 states. [2020-10-28 13:14:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16854 to 16521. [2020-10-28 13:14:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16521 states. [2020-10-28 13:14:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16521 states to 16521 states and 21892 transitions. [2020-10-28 13:14:56,055 INFO L78 Accepts]: Start accepts. Automaton has 16521 states and 21892 transitions. Word has length 618 [2020-10-28 13:14:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:56,056 INFO L481 AbstractCegarLoop]: Abstraction has 16521 states and 21892 transitions. [2020-10-28 13:14:56,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:56,056 INFO L276 IsEmpty]: Start isEmpty. Operand 16521 states and 21892 transitions. [2020-10-28 13:14:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-10-28 13:14:56,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:56,072 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:56,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:14:56,072 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:56,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1068113011, now seen corresponding path program 1 times [2020-10-28 13:14:56,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:56,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122405183] [2020-10-28 13:14:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:56,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:58,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:59,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:59,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 648 [2020-10-28 13:14:59,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:14:59,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3691 [2020-10-28 13:14:59,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:59,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 493 [2020-10-28 13:14:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:14:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:00,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:00,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:00,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:00,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:00,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:00,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:00,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:15:00,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:00,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:15:00,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:00,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:00,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:00,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:15:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:00,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:00,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:15:00,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:15:00,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:00,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:00,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:15:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:15:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:00,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:15:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:00,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:15:00,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:15:00,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:00,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:15:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 382 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-28 13:15:01,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122405183] [2020-10-28 13:15:01,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:01,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:01,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837917940] [2020-10-28 13:15:01,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:01,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:01,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:01,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:01,155 INFO L87 Difference]: Start difference. First operand 16521 states and 21892 transitions. Second operand 7 states. [2020-10-28 13:15:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:16,068 INFO L93 Difference]: Finished difference Result 36019 states and 50587 transitions. [2020-10-28 13:15:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:15:16,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 630 [2020-10-28 13:15:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:16,154 INFO L225 Difference]: With dead ends: 36019 [2020-10-28 13:15:16,154 INFO L226 Difference]: Without dead ends: 19811 [2020-10-28 13:15:16,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:15:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19811 states. [2020-10-28 13:15:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19811 to 19346. [2020-10-28 13:15:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19346 states. [2020-10-28 13:15:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19346 states to 19346 states and 25293 transitions. [2020-10-28 13:15:16,679 INFO L78 Accepts]: Start accepts. Automaton has 19346 states and 25293 transitions. Word has length 630 [2020-10-28 13:15:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:16,680 INFO L481 AbstractCegarLoop]: Abstraction has 19346 states and 25293 transitions. [2020-10-28 13:15:16,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 19346 states and 25293 transitions. [2020-10-28 13:15:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-10-28 13:15:16,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:16,697 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:16,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:15:16,697 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:16,698 INFO L82 PathProgramCache]: Analyzing trace with hash 535674975, now seen corresponding path program 1 times [2020-10-28 13:15:16,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:16,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045127764] [2020-10-28 13:15:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:17,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:18,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:21,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:21,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-28 13:15:21,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:15:21,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-28 13:15:21,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:21,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:15:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:15:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:22,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:22,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:22,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:15:22,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:22,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:22,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:22,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:22,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:15:22,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:15:22,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:22,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:15:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:22,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:15:22,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:15:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:22,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:15:22,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:15:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:22,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:22,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 13:15:22,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 13:15:22,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:22,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:15:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:22,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2020-10-28 13:15:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:22,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:22,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:15:22,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:15:22,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:22,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:15:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 305 proven. 96 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2020-10-28 13:15:23,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045127764] [2020-10-28 13:15:23,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:23,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:23,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130827243] [2020-10-28 13:15:23,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:23,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:23,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:23,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:23,143 INFO L87 Difference]: Start difference. First operand 19346 states and 25293 transitions. Second operand 7 states.