./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b1624bcee836a6ef84f0c5a49c428b8da4ed56b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:43:35,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:43:35,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:43:35,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:43:35,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:43:35,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:43:35,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:43:35,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:43:35,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:43:35,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:43:35,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:43:35,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:43:35,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:43:35,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:43:35,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:43:35,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:43:35,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:43:35,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:43:35,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:43:35,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:43:35,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:43:35,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:43:35,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:43:35,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:43:35,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:43:35,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:43:35,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:43:35,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:43:35,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:43:35,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:43:35,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:43:35,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:43:35,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:43:35,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:43:35,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:43:35,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:43:35,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:43:35,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:43:35,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:43:35,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:43:35,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:43:35,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:43:35,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:43:35,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:43:35,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:43:35,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:43:35,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:43:35,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:43:35,160 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:43:35,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:43:35,161 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:43:35,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:43:35,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:43:35,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:43:35,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:43:35,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:43:35,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:43:35,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:43:35,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:43:35,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:43:35,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:43:35,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:43:35,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:43:35,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:43:35,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:43:35,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:43:35,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:43:35,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:43:35,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:43:35,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:43:35,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:43:35,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:43:35,171 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b1624bcee836a6ef84f0c5a49c428b8da4ed56b [2021-08-26 03:43:35,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:43:35,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:43:35,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:43:35,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:43:35,467 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:43:35,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c [2021-08-26 03:43:35,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270935735/4dbfcdbae53142a68c889a901afbecc1/FLAG7bb8c24d5 [2021-08-26 03:43:36,048 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:43:36,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c [2021-08-26 03:43:36,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270935735/4dbfcdbae53142a68c889a901afbecc1/FLAG7bb8c24d5 [2021-08-26 03:43:36,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270935735/4dbfcdbae53142a68c889a901afbecc1 [2021-08-26 03:43:36,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:43:36,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:43:36,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:43:36,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:43:36,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:43:36,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a49f39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36, skipping insertion in model container [2021-08-26 03:43:36,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:43:36,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:43:36,663 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2021-08-26 03:43:36,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:43:36,751 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:43:36,817 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2021-08-26 03:43:36,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:43:36,853 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:43:36,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36 WrapperNode [2021-08-26 03:43:36,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:43:36,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:43:36,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:43:36,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:43:36,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:43:36,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:43:36,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:43:36,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:43:36,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:43:36,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:43:36,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:43:36,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:43:36,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (1/1) ... [2021-08-26 03:43:36,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:43:36,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:43:36,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 03:43:36,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 03:43:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:43:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:43:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:43:37,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:43:37,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:43:37,864 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 03:43:37,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:43:37 BoogieIcfgContainer [2021-08-26 03:43:37,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:43:37,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:43:37,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:43:37,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:43:37,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:43:36" (1/3) ... [2021-08-26 03:43:37,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16612b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:43:37, skipping insertion in model container [2021-08-26 03:43:37,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:43:36" (2/3) ... [2021-08-26 03:43:37,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16612b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:43:37, skipping insertion in model container [2021-08-26 03:43:37,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:43:37" (3/3) ... [2021-08-26 03:43:37,871 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2021-08-26 03:43:37,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:43:37,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:43:37,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:43:37,916 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 03:43:37,916 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:43:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 142 states have (on average 1.971830985915493) internal successors, (280), 143 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:37,942 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:37,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:37,943 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:37,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1067704148, now seen corresponding path program 1 times [2021-08-26 03:43:37,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:37,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741844993] [2021-08-26 03:43:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:37,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:38,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:38,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741844993] [2021-08-26 03:43:38,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741844993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:38,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:38,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 03:43:38,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431458361] [2021-08-26 03:43:38,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 03:43:38,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 03:43:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 03:43:38,189 INFO L87 Difference]: Start difference. First operand has 144 states, 142 states have (on average 1.971830985915493) internal successors, (280), 143 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:38,828 INFO L93 Difference]: Finished difference Result 284 states and 554 transitions. [2021-08-26 03:43:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 03:43:38,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:38,844 INFO L225 Difference]: With dead ends: 284 [2021-08-26 03:43:38,844 INFO L226 Difference]: Without dead ends: 141 [2021-08-26 03:43:38,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 03:43:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-08-26 03:43:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-08-26 03:43:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4857142857142858) internal successors, (208), 140 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2021-08-26 03:43:38,882 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 139 [2021-08-26 03:43:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:38,883 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2021-08-26 03:43:38,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2021-08-26 03:43:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:38,885 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:38,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:38,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:43:38,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:38,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1752580255, now seen corresponding path program 1 times [2021-08-26 03:43:38,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:38,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572266115] [2021-08-26 03:43:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:38,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:38,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:38,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572266115] [2021-08-26 03:43:38,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572266115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:38,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:38,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 03:43:38,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301856057] [2021-08-26 03:43:38,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 03:43:38,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:38,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 03:43:38,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 03:43:38,954 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:39,646 INFO L93 Difference]: Finished difference Result 406 states and 605 transitions. [2021-08-26 03:43:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 03:43:39,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:39,653 INFO L225 Difference]: With dead ends: 406 [2021-08-26 03:43:39,653 INFO L226 Difference]: Without dead ends: 273 [2021-08-26 03:43:39,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 03:43:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-08-26 03:43:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-08-26 03:43:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.2536764705882353) internal successors, (341), 272 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 341 transitions. [2021-08-26 03:43:39,690 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 341 transitions. Word has length 139 [2021-08-26 03:43:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:39,690 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 341 transitions. [2021-08-26 03:43:39,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 341 transitions. [2021-08-26 03:43:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:39,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:39,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:39,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 03:43:39,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2041942551, now seen corresponding path program 1 times [2021-08-26 03:43:39,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:39,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318570049] [2021-08-26 03:43:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:39,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:39,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:39,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318570049] [2021-08-26 03:43:39,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318570049] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:39,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:39,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 03:43:39,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235404083] [2021-08-26 03:43:39,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 03:43:39,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:39,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 03:43:39,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:43:39,828 INFO L87 Difference]: Start difference. First operand 273 states and 341 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:40,161 INFO L93 Difference]: Finished difference Result 402 states and 470 transitions. [2021-08-26 03:43:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 03:43:40,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:40,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:40,167 INFO L225 Difference]: With dead ends: 402 [2021-08-26 03:43:40,167 INFO L226 Difference]: Without dead ends: 267 [2021-08-26 03:43:40,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:43:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-08-26 03:43:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-08-26 03:43:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.2481203007518797) internal successors, (332), 266 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 332 transitions. [2021-08-26 03:43:40,181 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 332 transitions. Word has length 139 [2021-08-26 03:43:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:40,181 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 332 transitions. [2021-08-26 03:43:40,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 332 transitions. [2021-08-26 03:43:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:40,184 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:40,184 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:40,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 03:43:40,185 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:40,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:40,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1527946145, now seen corresponding path program 1 times [2021-08-26 03:43:40,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:40,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996659025] [2021-08-26 03:43:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:40,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:40,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:40,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996659025] [2021-08-26 03:43:40,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996659025] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:40,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:40,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 03:43:40,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622683898] [2021-08-26 03:43:40,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 03:43:40,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:40,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 03:43:40,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-26 03:43:40,309 INFO L87 Difference]: Start difference. First operand 267 states and 332 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:40,660 INFO L93 Difference]: Finished difference Result 394 states and 459 transitions. [2021-08-26 03:43:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 03:43:40,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:40,662 INFO L225 Difference]: With dead ends: 394 [2021-08-26 03:43:40,663 INFO L226 Difference]: Without dead ends: 265 [2021-08-26 03:43:40,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-26 03:43:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-08-26 03:43:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-08-26 03:43:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.246212121212121) internal successors, (329), 264 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 329 transitions. [2021-08-26 03:43:40,672 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 329 transitions. Word has length 139 [2021-08-26 03:43:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:40,673 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 329 transitions. [2021-08-26 03:43:40,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2021-08-26 03:43:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:40,675 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:40,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:40,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 03:43:40,675 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:40,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:40,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1089183555, now seen corresponding path program 1 times [2021-08-26 03:43:40,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:40,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873056099] [2021-08-26 03:43:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:40,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:40,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:40,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873056099] [2021-08-26 03:43:40,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873056099] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:40,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:40,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-26 03:43:40,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704276374] [2021-08-26 03:43:40,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 03:43:40,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:40,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 03:43:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-26 03:43:40,792 INFO L87 Difference]: Start difference. First operand 265 states and 329 transitions. Second operand has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:41,177 INFO L93 Difference]: Finished difference Result 386 states and 450 transitions. [2021-08-26 03:43:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 03:43:41,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:41,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:41,179 INFO L225 Difference]: With dead ends: 386 [2021-08-26 03:43:41,179 INFO L226 Difference]: Without dead ends: 259 [2021-08-26 03:43:41,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-26 03:43:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-08-26 03:43:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2021-08-26 03:43:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.2403100775193798) internal successors, (320), 258 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 320 transitions. [2021-08-26 03:43:41,192 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 320 transitions. Word has length 139 [2021-08-26 03:43:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:41,193 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 320 transitions. [2021-08-26 03:43:41,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 320 transitions. [2021-08-26 03:43:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:41,194 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:41,195 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:41,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 03:43:41,195 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:41,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:41,196 INFO L82 PathProgramCache]: Analyzing trace with hash -41763050, now seen corresponding path program 1 times [2021-08-26 03:43:41,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:41,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762780270] [2021-08-26 03:43:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:41,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:41,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:41,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762780270] [2021-08-26 03:43:41,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762780270] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:41,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:41,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-26 03:43:41,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619824978] [2021-08-26 03:43:41,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 03:43:41,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 03:43:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-26 03:43:41,340 INFO L87 Difference]: Start difference. First operand 259 states and 320 transitions. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:41,783 INFO L93 Difference]: Finished difference Result 374 states and 435 transitions. [2021-08-26 03:43:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 03:43:41,784 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:41,785 INFO L225 Difference]: With dead ends: 374 [2021-08-26 03:43:41,785 INFO L226 Difference]: Without dead ends: 253 [2021-08-26 03:43:41,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-26 03:43:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-08-26 03:43:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-08-26 03:43:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.2341269841269842) internal successors, (311), 252 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 311 transitions. [2021-08-26 03:43:41,792 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 311 transitions. Word has length 139 [2021-08-26 03:43:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:41,792 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 311 transitions. [2021-08-26 03:43:41,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 311 transitions. [2021-08-26 03:43:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:41,794 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:41,794 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:41,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 03:43:41,794 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:41,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1153200357, now seen corresponding path program 1 times [2021-08-26 03:43:41,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:41,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063730353] [2021-08-26 03:43:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:41,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:41,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:41,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063730353] [2021-08-26 03:43:41,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063730353] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:41,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:41,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-26 03:43:41,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662161830] [2021-08-26 03:43:41,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 03:43:41,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:41,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 03:43:41,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-26 03:43:41,955 INFO L87 Difference]: Start difference. First operand 253 states and 311 transitions. Second operand has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:42,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:42,195 INFO L93 Difference]: Finished difference Result 364 states and 422 transitions. [2021-08-26 03:43:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 03:43:42,196 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:42,197 INFO L225 Difference]: With dead ends: 364 [2021-08-26 03:43:42,197 INFO L226 Difference]: Without dead ends: 249 [2021-08-26 03:43:42,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-26 03:43:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-08-26 03:43:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-08-26 03:43:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.2298387096774193) internal successors, (305), 248 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 305 transitions. [2021-08-26 03:43:42,204 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 305 transitions. Word has length 139 [2021-08-26 03:43:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:42,205 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 305 transitions. [2021-08-26 03:43:42,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:42,205 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 305 transitions. [2021-08-26 03:43:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:42,206 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:42,207 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:42,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 03:43:42,207 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:42,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:42,207 INFO L82 PathProgramCache]: Analyzing trace with hash -717830785, now seen corresponding path program 1 times [2021-08-26 03:43:42,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:42,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595720320] [2021-08-26 03:43:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:42,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:42,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:42,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595720320] [2021-08-26 03:43:42,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595720320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:42,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:42,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-26 03:43:42,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038749964] [2021-08-26 03:43:42,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 03:43:42,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:42,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 03:43:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-26 03:43:42,432 INFO L87 Difference]: Start difference. First operand 249 states and 305 transitions. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:42,734 INFO L93 Difference]: Finished difference Result 352 states and 408 transitions. [2021-08-26 03:43:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-26 03:43:42,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:42,736 INFO L225 Difference]: With dead ends: 352 [2021-08-26 03:43:42,737 INFO L226 Difference]: Without dead ends: 241 [2021-08-26 03:43:42,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-26 03:43:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-08-26 03:43:42,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-08-26 03:43:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.2208333333333334) internal successors, (293), 240 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 293 transitions. [2021-08-26 03:43:42,744 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 293 transitions. Word has length 139 [2021-08-26 03:43:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:42,744 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 293 transitions. [2021-08-26 03:43:42,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 293 transitions. [2021-08-26 03:43:42,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:42,746 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:42,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:42,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 03:43:42,746 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:42,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1738769551, now seen corresponding path program 1 times [2021-08-26 03:43:42,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:42,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714018620] [2021-08-26 03:43:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:42,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:43,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:43,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714018620] [2021-08-26 03:43:43,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714018620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:43,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:43,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-08-26 03:43:43,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146256920] [2021-08-26 03:43:43,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-26 03:43:43,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-26 03:43:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-26 03:43:43,076 INFO L87 Difference]: Start difference. First operand 241 states and 293 transitions. Second operand has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:43,447 INFO L93 Difference]: Finished difference Result 338 states and 390 transitions. [2021-08-26 03:43:43,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-26 03:43:43,447 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:43,449 INFO L225 Difference]: With dead ends: 338 [2021-08-26 03:43:43,449 INFO L226 Difference]: Without dead ends: 235 [2021-08-26 03:43:43,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 208.3ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-26 03:43:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-08-26 03:43:43,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-08-26 03:43:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.2136752136752136) internal successors, (284), 234 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 284 transitions. [2021-08-26 03:43:43,456 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 284 transitions. Word has length 139 [2021-08-26 03:43:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:43,456 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 284 transitions. [2021-08-26 03:43:43,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 284 transitions. [2021-08-26 03:43:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:43,458 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:43,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:43,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 03:43:43,459 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:43,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:43,459 INFO L82 PathProgramCache]: Analyzing trace with hash -834827415, now seen corresponding path program 1 times [2021-08-26 03:43:43,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:43,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099532933] [2021-08-26 03:43:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:43,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:43,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:43,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099532933] [2021-08-26 03:43:43,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099532933] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:43,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:43,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-08-26 03:43:43,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655505817] [2021-08-26 03:43:43,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-26 03:43:43,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:43,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-26 03:43:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-08-26 03:43:43,758 INFO L87 Difference]: Start difference. First operand 235 states and 284 transitions. Second operand has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:44,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:44,214 INFO L93 Difference]: Finished difference Result 330 states and 379 transitions. [2021-08-26 03:43:44,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-26 03:43:44,215 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:44,216 INFO L225 Difference]: With dead ends: 330 [2021-08-26 03:43:44,216 INFO L226 Difference]: Without dead ends: 233 [2021-08-26 03:43:44,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 216.6ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-08-26 03:43:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-08-26 03:43:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-08-26 03:43:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.2112068965517242) internal successors, (281), 232 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 281 transitions. [2021-08-26 03:43:44,224 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 281 transitions. Word has length 139 [2021-08-26 03:43:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:44,224 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 281 transitions. [2021-08-26 03:43:44,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 281 transitions. [2021-08-26 03:43:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:44,226 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:44,226 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:44,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 03:43:44,227 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:44,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:44,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1868941195, now seen corresponding path program 1 times [2021-08-26 03:43:44,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:44,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965409344] [2021-08-26 03:43:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:44,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:44,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:44,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965409344] [2021-08-26 03:43:44,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965409344] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:44,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:44,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-08-26 03:43:44,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623425230] [2021-08-26 03:43:44,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-26 03:43:44,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-26 03:43:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-08-26 03:43:44,579 INFO L87 Difference]: Start difference. First operand 233 states and 281 transitions. Second operand has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:44,891 INFO L93 Difference]: Finished difference Result 322 states and 370 transitions. [2021-08-26 03:43:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-26 03:43:44,892 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:44,894 INFO L225 Difference]: With dead ends: 322 [2021-08-26 03:43:44,894 INFO L226 Difference]: Without dead ends: 227 [2021-08-26 03:43:44,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 270.7ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-08-26 03:43:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-08-26 03:43:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-08-26 03:43:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.2035398230088497) internal successors, (272), 226 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 272 transitions. [2021-08-26 03:43:44,900 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 272 transitions. Word has length 139 [2021-08-26 03:43:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:44,902 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 272 transitions. [2021-08-26 03:43:44,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 272 transitions. [2021-08-26 03:43:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:44,903 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:44,903 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:44,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-26 03:43:44,904 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1432066370, now seen corresponding path program 1 times [2021-08-26 03:43:44,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:44,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191541195] [2021-08-26 03:43:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:44,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:45,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:45,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191541195] [2021-08-26 03:43:45,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191541195] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:45,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:45,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-08-26 03:43:45,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894386388] [2021-08-26 03:43:45,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-26 03:43:45,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-26 03:43:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-08-26 03:43:45,390 INFO L87 Difference]: Start difference. First operand 227 states and 272 transitions. Second operand has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:45,796 INFO L93 Difference]: Finished difference Result 310 states and 355 transitions. [2021-08-26 03:43:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-26 03:43:45,798 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:45,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:45,799 INFO L225 Difference]: With dead ends: 310 [2021-08-26 03:43:45,799 INFO L226 Difference]: Without dead ends: 221 [2021-08-26 03:43:45,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 374.6ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-08-26 03:43:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-08-26 03:43:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-08-26 03:43:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.1954545454545455) internal successors, (263), 220 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 263 transitions. [2021-08-26 03:43:45,805 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 263 transitions. Word has length 139 [2021-08-26 03:43:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:45,806 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 263 transitions. [2021-08-26 03:43:45,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 263 transitions. [2021-08-26 03:43:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:45,807 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:45,807 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:45,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-26 03:43:45,808 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:45,808 INFO L82 PathProgramCache]: Analyzing trace with hash -269817043, now seen corresponding path program 1 times [2021-08-26 03:43:45,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:45,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667314099] [2021-08-26 03:43:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:45,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:46,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:46,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667314099] [2021-08-26 03:43:46,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667314099] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:46,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:46,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-08-26 03:43:46,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821118910] [2021-08-26 03:43:46,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-26 03:43:46,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-26 03:43:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-08-26 03:43:46,342 INFO L87 Difference]: Start difference. First operand 221 states and 263 transitions. Second operand has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:46,727 INFO L93 Difference]: Finished difference Result 300 states and 342 transitions. [2021-08-26 03:43:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-26 03:43:46,728 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:46,729 INFO L225 Difference]: With dead ends: 300 [2021-08-26 03:43:46,729 INFO L226 Difference]: Without dead ends: 217 [2021-08-26 03:43:46,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 376.2ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-08-26 03:43:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-08-26 03:43:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-08-26 03:43:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.1898148148148149) internal successors, (257), 216 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2021-08-26 03:43:46,736 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 139 [2021-08-26 03:43:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:46,737 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2021-08-26 03:43:46,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2021-08-26 03:43:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:46,738 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:46,739 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:46,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-26 03:43:46,739 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:46,739 INFO L82 PathProgramCache]: Analyzing trace with hash -295254777, now seen corresponding path program 1 times [2021-08-26 03:43:46,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:46,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71395992] [2021-08-26 03:43:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:46,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:47,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:47,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71395992] [2021-08-26 03:43:47,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71395992] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:47,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:47,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-08-26 03:43:47,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811376780] [2021-08-26 03:43:47,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-26 03:43:47,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-26 03:43:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 03:43:47,287 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand has 35 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:47,607 INFO L93 Difference]: Finished difference Result 288 states and 328 transitions. [2021-08-26 03:43:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-26 03:43:47,608 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:47,610 INFO L225 Difference]: With dead ends: 288 [2021-08-26 03:43:47,610 INFO L226 Difference]: Without dead ends: 209 [2021-08-26 03:43:47,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 455.7ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-08-26 03:43:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-08-26 03:43:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-08-26 03:43:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.1778846153846154) internal successors, (245), 208 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 245 transitions. [2021-08-26 03:43:47,616 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 245 transitions. Word has length 139 [2021-08-26 03:43:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:47,616 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 245 transitions. [2021-08-26 03:43:47,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 245 transitions. [2021-08-26 03:43:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:47,618 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:47,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:47,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-26 03:43:47,619 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:47,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1471149049, now seen corresponding path program 1 times [2021-08-26 03:43:47,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:47,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924110985] [2021-08-26 03:43:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:47,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:48,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:48,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924110985] [2021-08-26 03:43:48,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924110985] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:48,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:48,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-08-26 03:43:48,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956299121] [2021-08-26 03:43:48,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-08-26 03:43:48,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-08-26 03:43:48,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-08-26 03:43:48,348 INFO L87 Difference]: Start difference. First operand 209 states and 245 transitions. Second operand has 38 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 38 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:48,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:48,712 INFO L93 Difference]: Finished difference Result 274 states and 310 transitions. [2021-08-26 03:43:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-26 03:43:48,712 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 38 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:48,713 INFO L225 Difference]: With dead ends: 274 [2021-08-26 03:43:48,713 INFO L226 Difference]: Without dead ends: 203 [2021-08-26 03:43:48,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 626.9ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-08-26 03:43:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-08-26 03:43:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-08-26 03:43:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.1683168316831682) internal successors, (236), 202 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 236 transitions. [2021-08-26 03:43:48,719 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 236 transitions. Word has length 139 [2021-08-26 03:43:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:48,720 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 236 transitions. [2021-08-26 03:43:48,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 38 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 236 transitions. [2021-08-26 03:43:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:48,721 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:48,721 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:48,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-26 03:43:48,721 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:48,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2129031119, now seen corresponding path program 1 times [2021-08-26 03:43:48,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:48,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921808448] [2021-08-26 03:43:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:48,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:49,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:49,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921808448] [2021-08-26 03:43:49,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921808448] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:49,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:49,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-08-26 03:43:49,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377062027] [2021-08-26 03:43:49,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-26 03:43:49,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:49,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-26 03:43:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 03:43:49,377 INFO L87 Difference]: Start difference. First operand 203 states and 236 transitions. Second operand has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:49,914 INFO L93 Difference]: Finished difference Result 266 states and 299 transitions. [2021-08-26 03:43:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-26 03:43:49,915 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:49,916 INFO L225 Difference]: With dead ends: 266 [2021-08-26 03:43:49,916 INFO L226 Difference]: Without dead ends: 201 [2021-08-26 03:43:49,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 552.1ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-08-26 03:43:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-08-26 03:43:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-08-26 03:43:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.165) internal successors, (233), 200 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 233 transitions. [2021-08-26 03:43:49,921 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 233 transitions. Word has length 139 [2021-08-26 03:43:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:49,922 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 233 transitions. [2021-08-26 03:43:49,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 233 transitions. [2021-08-26 03:43:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:49,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:49,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:49,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-26 03:43:49,923 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:49,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1672960723, now seen corresponding path program 1 times [2021-08-26 03:43:49,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:49,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833800696] [2021-08-26 03:43:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:49,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:50,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:50,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833800696] [2021-08-26 03:43:50,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833800696] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:50,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:50,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-08-26 03:43:50,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111613684] [2021-08-26 03:43:50,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-08-26 03:43:50,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:50,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-08-26 03:43:50,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-08-26 03:43:50,718 INFO L87 Difference]: Start difference. First operand 201 states and 233 transitions. Second operand has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 42 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:51,116 INFO L93 Difference]: Finished difference Result 258 states and 290 transitions. [2021-08-26 03:43:51,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-26 03:43:51,116 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 42 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:51,117 INFO L225 Difference]: With dead ends: 258 [2021-08-26 03:43:51,118 INFO L226 Difference]: Without dead ends: 195 [2021-08-26 03:43:51,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 673.3ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-08-26 03:43:51,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-08-26 03:43:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-08-26 03:43:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.1546391752577319) internal successors, (224), 194 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 224 transitions. [2021-08-26 03:43:51,123 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 224 transitions. Word has length 139 [2021-08-26 03:43:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:51,123 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 224 transitions. [2021-08-26 03:43:51,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 42 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 224 transitions. [2021-08-26 03:43:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:51,125 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:51,125 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:51,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-26 03:43:51,125 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:51,126 INFO L82 PathProgramCache]: Analyzing trace with hash -371842202, now seen corresponding path program 1 times [2021-08-26 03:43:51,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:51,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568890321] [2021-08-26 03:43:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:51,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:51,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:51,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568890321] [2021-08-26 03:43:51,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568890321] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:51,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:51,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-08-26 03:43:51,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135217362] [2021-08-26 03:43:51,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-08-26 03:43:51,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:51,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-08-26 03:43:51,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-08-26 03:43:51,980 INFO L87 Difference]: Start difference. First operand 195 states and 224 transitions. Second operand has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 45 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:52,274 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2021-08-26 03:43:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-26 03:43:52,274 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 45 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:52,275 INFO L225 Difference]: With dead ends: 246 [2021-08-26 03:43:52,275 INFO L226 Difference]: Without dead ends: 189 [2021-08-26 03:43:52,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 733.7ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-08-26 03:43:52,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-08-26 03:43:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-08-26 03:43:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.1436170212765957) internal successors, (215), 188 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 215 transitions. [2021-08-26 03:43:52,281 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 215 transitions. Word has length 139 [2021-08-26 03:43:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:52,281 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 215 transitions. [2021-08-26 03:43:52,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 45 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 215 transitions. [2021-08-26 03:43:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:52,282 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:52,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:52,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-26 03:43:52,283 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:52,283 INFO L82 PathProgramCache]: Analyzing trace with hash 941521525, now seen corresponding path program 1 times [2021-08-26 03:43:52,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:52,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130352459] [2021-08-26 03:43:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:52,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:53,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:53,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130352459] [2021-08-26 03:43:53,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130352459] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:53,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:53,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-08-26 03:43:53,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470399958] [2021-08-26 03:43:53,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-08-26 03:43:53,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:53,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-08-26 03:43:53,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-08-26 03:43:53,235 INFO L87 Difference]: Start difference. First operand 189 states and 215 transitions. Second operand has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:53,644 INFO L93 Difference]: Finished difference Result 236 states and 262 transitions. [2021-08-26 03:43:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-26 03:43:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:53,647 INFO L225 Difference]: With dead ends: 236 [2021-08-26 03:43:53,647 INFO L226 Difference]: Without dead ends: 185 [2021-08-26 03:43:53,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 846.0ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-08-26 03:43:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-26 03:43:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-08-26 03:43:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.1358695652173914) internal successors, (209), 184 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 209 transitions. [2021-08-26 03:43:53,651 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 209 transitions. Word has length 139 [2021-08-26 03:43:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:53,652 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 209 transitions. [2021-08-26 03:43:53,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 209 transitions. [2021-08-26 03:43:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:53,653 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:53,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:53,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-26 03:43:53,653 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:53,654 INFO L82 PathProgramCache]: Analyzing trace with hash 566614415, now seen corresponding path program 1 times [2021-08-26 03:43:53,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:53,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570865135] [2021-08-26 03:43:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:53,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:54,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:54,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570865135] [2021-08-26 03:43:54,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570865135] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:54,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:54,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-08-26 03:43:54,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794202396] [2021-08-26 03:43:54,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-08-26 03:43:54,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:54,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-08-26 03:43:54,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-08-26 03:43:54,721 INFO L87 Difference]: Start difference. First operand 185 states and 209 transitions. Second operand has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:55,153 INFO L93 Difference]: Finished difference Result 224 states and 248 transitions. [2021-08-26 03:43:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-26 03:43:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:55,155 INFO L225 Difference]: With dead ends: 224 [2021-08-26 03:43:55,155 INFO L226 Difference]: Without dead ends: 177 [2021-08-26 03:43:55,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 956.1ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-08-26 03:43:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-08-26 03:43:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-08-26 03:43:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.1193181818181819) internal successors, (197), 176 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2021-08-26 03:43:55,159 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 139 [2021-08-26 03:43:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:55,160 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2021-08-26 03:43:55,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2021-08-26 03:43:55,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:55,161 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:55,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:55,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-26 03:43:55,161 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:55,162 INFO L82 PathProgramCache]: Analyzing trace with hash 325265535, now seen corresponding path program 1 times [2021-08-26 03:43:55,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:55,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157596310] [2021-08-26 03:43:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:55,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:56,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:56,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157596310] [2021-08-26 03:43:56,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157596310] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:56,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:56,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-08-26 03:43:56,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826245000] [2021-08-26 03:43:56,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-08-26 03:43:56,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-08-26 03:43:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-08-26 03:43:56,403 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand has 53 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 53 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:56,838 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions. [2021-08-26 03:43:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-26 03:43:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 53 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:56,839 INFO L225 Difference]: With dead ends: 212 [2021-08-26 03:43:56,839 INFO L226 Difference]: Without dead ends: 143 [2021-08-26 03:43:56,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1106.4ms TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-08-26 03:43:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-08-26 03:43:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-08-26 03:43:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 140 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2021-08-26 03:43:56,845 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 139 [2021-08-26 03:43:56,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:56,846 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2021-08-26 03:43:56,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 53 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2021-08-26 03:43:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-26 03:43:56,847 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:56,847 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:56,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-26 03:43:56,848 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:56,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2012640870, now seen corresponding path program 1 times [2021-08-26 03:43:56,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:56,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083676691] [2021-08-26 03:43:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:56,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:43:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:43:58,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:43:58,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083676691] [2021-08-26 03:43:58,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083676691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:43:58,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:43:58,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-08-26 03:43:58,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128150332] [2021-08-26 03:43:58,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-08-26 03:43:58,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:43:58,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-08-26 03:43:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-08-26 03:43:58,891 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 70 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 70 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:59,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:43:59,356 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2021-08-26 03:43:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-08-26 03:43:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 70 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-26 03:43:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:43:59,359 INFO L225 Difference]: With dead ends: 182 [2021-08-26 03:43:59,359 INFO L226 Difference]: Without dead ends: 143 [2021-08-26 03:43:59,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1869.3ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-08-26 03:43:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-08-26 03:43:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-08-26 03:43:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 141 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2021-08-26 03:43:59,365 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2021-08-26 03:43:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:43:59,365 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2021-08-26 03:43:59,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 70 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:43:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2021-08-26 03:43:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-26 03:43:59,366 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:43:59,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:43:59,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-26 03:43:59,367 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:43:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:43:59,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1420118316, now seen corresponding path program 1 times [2021-08-26 03:43:59,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:43:59,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867614605] [2021-08-26 03:43:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:43:59,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:43:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:01,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:01,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867614605] [2021-08-26 03:44:01,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867614605] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:01,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916565363] [2021-08-26 03:44:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:01,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:01,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:01,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:01,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:44:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:01,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 70 conjunts are in the unsatisfiable core [2021-08-26 03:44:01,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:02,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916565363] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:02,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:02,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2021-08-26 03:44:02,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455153981] [2021-08-26 03:44:02,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-08-26 03:44:02,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-08-26 03:44:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-08-26 03:44:02,135 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand has 72 states, 72 states have (on average 2.0) internal successors, (144), 72 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:02,597 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2021-08-26 03:44:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-08-26 03:44:02,597 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 72 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-08-26 03:44:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:02,598 INFO L225 Difference]: With dead ends: 148 [2021-08-26 03:44:02,598 INFO L226 Difference]: Without dead ends: 145 [2021-08-26 03:44:02,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1798.3ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-08-26 03:44:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-26 03:44:02,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2021-08-26 03:44:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.006993006993007) internal successors, (144), 143 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2021-08-26 03:44:02,604 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2021-08-26 03:44:02,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:02,604 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2021-08-26 03:44:02,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0) internal successors, (144), 72 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2021-08-26 03:44:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-08-26 03:44:02,605 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:02,605 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-26 03:44:02,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 03:44:02,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-26 03:44:02,829 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:02,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:02,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1058373006, now seen corresponding path program 2 times [2021-08-26 03:44:02,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:02,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211572226] [2021-08-26 03:44:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:02,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:04,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:04,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211572226] [2021-08-26 03:44:04,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211572226] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:04,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239845059] [2021-08-26 03:44:04,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:44:04,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:04,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:04,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 03:44:05,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:44:05,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:05,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 71 conjunts are in the unsatisfiable core [2021-08-26 03:44:05,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:05,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239845059] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:05,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:05,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2021-08-26 03:44:05,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416912889] [2021-08-26 03:44:05,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-08-26 03:44:05,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:05,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-08-26 03:44:05,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-08-26 03:44:05,680 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 73 states, 73 states have (on average 2.0) internal successors, (146), 73 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:06,134 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2021-08-26 03:44:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-08-26 03:44:06,134 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0) internal successors, (146), 73 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-08-26 03:44:06,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:06,135 INFO L225 Difference]: With dead ends: 150 [2021-08-26 03:44:06,135 INFO L226 Difference]: Without dead ends: 147 [2021-08-26 03:44:06,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1975.1ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-08-26 03:44:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-26 03:44:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-08-26 03:44:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.006896551724138) internal successors, (146), 145 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-08-26 03:44:06,139 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2021-08-26 03:44:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:06,140 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-08-26 03:44:06,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0) internal successors, (146), 73 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:06,140 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-08-26 03:44:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-08-26 03:44:06,141 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:06,141 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:06,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:06,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-26 03:44:06,353 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:06,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:06,353 INFO L82 PathProgramCache]: Analyzing trace with hash -818315832, now seen corresponding path program 3 times [2021-08-26 03:44:06,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:06,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764293208] [2021-08-26 03:44:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:06,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:08,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:08,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764293208] [2021-08-26 03:44:08,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764293208] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:08,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71398463] [2021-08-26 03:44:08,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:44:08,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:08,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:08,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:08,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 03:44:08,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-26 03:44:08,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:08,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 72 conjunts are in the unsatisfiable core [2021-08-26 03:44:08,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:09,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71398463] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:09,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:09,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2021-08-26 03:44:09,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060885363] [2021-08-26 03:44:09,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-08-26 03:44:09,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-08-26 03:44:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-08-26 03:44:09,297 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 74 states, 74 states have (on average 2.0) internal successors, (148), 74 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:09,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:09,758 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2021-08-26 03:44:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-08-26 03:44:09,767 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0) internal successors, (148), 74 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-08-26 03:44:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:09,768 INFO L225 Difference]: With dead ends: 152 [2021-08-26 03:44:09,768 INFO L226 Difference]: Without dead ends: 149 [2021-08-26 03:44:09,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1997.2ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-08-26 03:44:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-08-26 03:44:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-08-26 03:44:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0068027210884354) internal successors, (148), 147 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2021-08-26 03:44:09,773 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2021-08-26 03:44:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:09,773 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2021-08-26 03:44:09,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.0) internal successors, (148), 74 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2021-08-26 03:44:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-08-26 03:44:09,774 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:09,775 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:09,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:09,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:09,993 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:09,993 INFO L82 PathProgramCache]: Analyzing trace with hash -430024830, now seen corresponding path program 4 times [2021-08-26 03:44:09,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:09,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283406740] [2021-08-26 03:44:09,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:09,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:12,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:12,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283406740] [2021-08-26 03:44:12,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283406740] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:12,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632342101] [2021-08-26 03:44:12,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 03:44:12,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:12,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:12,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 03:44:12,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 03:44:12,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:12,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 73 conjunts are in the unsatisfiable core [2021-08-26 03:44:12,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:13,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632342101] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:13,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:13,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2021-08-26 03:44:13,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200141577] [2021-08-26 03:44:13,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-08-26 03:44:13,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:13,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-08-26 03:44:13,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-08-26 03:44:13,042 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand has 75 states, 75 states have (on average 2.0) internal successors, (150), 75 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:13,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:13,529 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2021-08-26 03:44:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-08-26 03:44:13,537 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 75 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-08-26 03:44:13,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:13,538 INFO L225 Difference]: With dead ends: 154 [2021-08-26 03:44:13,538 INFO L226 Difference]: Without dead ends: 151 [2021-08-26 03:44:13,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1975.8ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-08-26 03:44:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-26 03:44:13,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-08-26 03:44:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0067114093959733) internal successors, (150), 149 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2021-08-26 03:44:13,542 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2021-08-26 03:44:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:13,542 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2021-08-26 03:44:13,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 75 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2021-08-26 03:44:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-08-26 03:44:13,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:13,543 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:13,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:13,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-26 03:44:13,765 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash -944526660, now seen corresponding path program 5 times [2021-08-26 03:44:13,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:13,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274016316] [2021-08-26 03:44:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:13,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:15,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:15,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274016316] [2021-08-26 03:44:15,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274016316] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:15,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205242588] [2021-08-26 03:44:15,998 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 03:44:15,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:15,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:15,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:15,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 03:44:16,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-26 03:44:16,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:16,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 74 conjunts are in the unsatisfiable core [2021-08-26 03:44:16,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:16,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205242588] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:16,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:16,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2021-08-26 03:44:16,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957242437] [2021-08-26 03:44:16,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-08-26 03:44:16,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:16,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-08-26 03:44:16,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-08-26 03:44:16,830 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand has 76 states, 76 states have (on average 2.0) internal successors, (152), 76 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:17,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:17,279 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-08-26 03:44:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-08-26 03:44:17,280 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0) internal successors, (152), 76 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-08-26 03:44:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:17,281 INFO L225 Difference]: With dead ends: 156 [2021-08-26 03:44:17,281 INFO L226 Difference]: Without dead ends: 153 [2021-08-26 03:44:17,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2062.6ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-08-26 03:44:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-26 03:44:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-08-26 03:44:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0066225165562914) internal successors, (152), 151 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2021-08-26 03:44:17,285 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2021-08-26 03:44:17,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:17,286 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2021-08-26 03:44:17,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.0) internal successors, (152), 76 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2021-08-26 03:44:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-08-26 03:44:17,287 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:17,287 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:17,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:17,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-26 03:44:17,501 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1459546250, now seen corresponding path program 6 times [2021-08-26 03:44:17,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:17,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508357102] [2021-08-26 03:44:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:17,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:19,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:19,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508357102] [2021-08-26 03:44:19,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508357102] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:19,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957960307] [2021-08-26 03:44:19,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 03:44:19,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:19,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:19,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 03:44:20,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-26 03:44:20,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:20,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 75 conjunts are in the unsatisfiable core [2021-08-26 03:44:20,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:20,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957960307] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:20,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:20,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2021-08-26 03:44:20,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324007490] [2021-08-26 03:44:20,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-08-26 03:44:20,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:20,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-08-26 03:44:20,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-08-26 03:44:20,723 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 77 states, 77 states have (on average 2.0) internal successors, (154), 77 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:21,162 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2021-08-26 03:44:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-08-26 03:44:21,162 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.0) internal successors, (154), 77 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-08-26 03:44:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:21,164 INFO L225 Difference]: With dead ends: 158 [2021-08-26 03:44:21,164 INFO L226 Difference]: Without dead ends: 155 [2021-08-26 03:44:21,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2133.8ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-08-26 03:44:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-26 03:44:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-08-26 03:44:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.0065359477124183) internal successors, (154), 153 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2021-08-26 03:44:21,168 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2021-08-26 03:44:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:21,168 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2021-08-26 03:44:21,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.0) internal successors, (154), 77 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2021-08-26 03:44:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-08-26 03:44:21,169 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:21,170 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:21,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:21,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-26 03:44:21,395 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:21,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1822834096, now seen corresponding path program 7 times [2021-08-26 03:44:21,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:21,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250369788] [2021-08-26 03:44:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:21,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:23,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:23,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250369788] [2021-08-26 03:44:23,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250369788] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:23,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325456959] [2021-08-26 03:44:23,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 03:44:23,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:23,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:23,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:23,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 03:44:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:24,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 76 conjunts are in the unsatisfiable core [2021-08-26 03:44:24,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:24,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325456959] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:24,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:24,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2021-08-26 03:44:24,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931722178] [2021-08-26 03:44:24,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-08-26 03:44:24,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-08-26 03:44:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-08-26 03:44:24,676 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 78 states, 78 states have (on average 2.0) internal successors, (156), 78 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:25,115 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2021-08-26 03:44:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-26 03:44:25,116 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0) internal successors, (156), 78 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-08-26 03:44:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:25,118 INFO L225 Difference]: With dead ends: 160 [2021-08-26 03:44:25,118 INFO L226 Difference]: Without dead ends: 157 [2021-08-26 03:44:25,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2180.8ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-08-26 03:44:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-08-26 03:44:25,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-08-26 03:44:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0064516129032257) internal successors, (156), 155 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2021-08-26 03:44:25,123 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2021-08-26 03:44:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:25,123 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2021-08-26 03:44:25,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.0) internal successors, (156), 78 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:25,123 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2021-08-26 03:44:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-08-26 03:44:25,124 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:25,124 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:25,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:25,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:25,337 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:25,337 INFO L82 PathProgramCache]: Analyzing trace with hash -610615958, now seen corresponding path program 8 times [2021-08-26 03:44:25,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:25,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926423693] [2021-08-26 03:44:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:25,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:27,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:27,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926423693] [2021-08-26 03:44:27,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926423693] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:27,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084227762] [2021-08-26 03:44:27,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:44:27,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:27,724 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:27,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 03:44:28,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:44:28,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:28,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 77 conjunts are in the unsatisfiable core [2021-08-26 03:44:28,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:28,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084227762] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:28,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:28,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2021-08-26 03:44:28,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790021453] [2021-08-26 03:44:28,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-08-26 03:44:28,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-08-26 03:44:28,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-08-26 03:44:28,802 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand has 79 states, 79 states have (on average 2.0) internal successors, (158), 79 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:29,295 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2021-08-26 03:44:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-08-26 03:44:29,296 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0) internal successors, (158), 79 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-08-26 03:44:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:29,297 INFO L225 Difference]: With dead ends: 162 [2021-08-26 03:44:29,297 INFO L226 Difference]: Without dead ends: 159 [2021-08-26 03:44:29,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2192.7ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-08-26 03:44:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-26 03:44:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-08-26 03:44:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.0063694267515924) internal successors, (158), 157 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-08-26 03:44:29,301 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2021-08-26 03:44:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:29,301 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-08-26 03:44:29,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.0) internal successors, (158), 79 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-08-26 03:44:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-08-26 03:44:29,302 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:29,303 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:29,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-08-26 03:44:29,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:29,517 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1601058468, now seen corresponding path program 9 times [2021-08-26 03:44:29,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:29,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914255277] [2021-08-26 03:44:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:29,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:31,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:31,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914255277] [2021-08-26 03:44:31,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914255277] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:31,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264414800] [2021-08-26 03:44:31,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:44:31,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:31,947 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:31,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 03:44:32,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-08-26 03:44:32,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:32,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 78 conjunts are in the unsatisfiable core [2021-08-26 03:44:32,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:33,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264414800] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:33,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:33,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2021-08-26 03:44:33,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424969698] [2021-08-26 03:44:33,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-08-26 03:44:33,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-08-26 03:44:33,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-08-26 03:44:33,017 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 80 states, 80 states have (on average 2.0) internal successors, (160), 80 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:33,452 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2021-08-26 03:44:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-08-26 03:44:33,452 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0) internal successors, (160), 80 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-08-26 03:44:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:33,453 INFO L225 Difference]: With dead ends: 164 [2021-08-26 03:44:33,453 INFO L226 Difference]: Without dead ends: 161 [2021-08-26 03:44:33,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2272.7ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-08-26 03:44:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-26 03:44:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2021-08-26 03:44:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0062893081761006) internal successors, (160), 159 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2021-08-26 03:44:33,456 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2021-08-26 03:44:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:33,456 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2021-08-26 03:44:33,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.0) internal successors, (160), 80 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2021-08-26 03:44:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-08-26 03:44:33,457 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:33,457 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:33,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:33,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:33,673 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:33,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1011370334, now seen corresponding path program 10 times [2021-08-26 03:44:33,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:33,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281833304] [2021-08-26 03:44:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:33,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:36,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:36,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281833304] [2021-08-26 03:44:36,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281833304] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:36,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635952753] [2021-08-26 03:44:36,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 03:44:36,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:36,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:36,187 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:36,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 03:44:36,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 03:44:36,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:36,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 79 conjunts are in the unsatisfiable core [2021-08-26 03:44:36,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:37,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635952753] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:37,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:37,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2021-08-26 03:44:37,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942863431] [2021-08-26 03:44:37,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-08-26 03:44:37,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-08-26 03:44:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-08-26 03:44:37,339 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand has 81 states, 81 states have (on average 2.0) internal successors, (162), 81 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:37,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:37,730 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2021-08-26 03:44:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-08-26 03:44:37,730 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 81 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-08-26 03:44:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:37,731 INFO L225 Difference]: With dead ends: 166 [2021-08-26 03:44:37,731 INFO L226 Difference]: Without dead ends: 163 [2021-08-26 03:44:37,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2356.4ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-08-26 03:44:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-26 03:44:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-08-26 03:44:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.0062111801242235) internal successors, (162), 161 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-08-26 03:44:37,735 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2021-08-26 03:44:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:37,736 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-08-26 03:44:37,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 81 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-08-26 03:44:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-08-26 03:44:37,737 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:37,737 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:37,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-08-26 03:44:37,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-08-26 03:44:37,957 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:37,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1256756632, now seen corresponding path program 11 times [2021-08-26 03:44:37,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:37,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821863213] [2021-08-26 03:44:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:37,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:40,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:40,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821863213] [2021-08-26 03:44:40,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821863213] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:40,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579036487] [2021-08-26 03:44:40,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 03:44:40,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:40,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:40,556 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:40,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 03:44:41,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-08-26 03:44:41,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:41,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 80 conjunts are in the unsatisfiable core [2021-08-26 03:44:41,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:41,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579036487] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:41,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:41,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2021-08-26 03:44:41,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462955496] [2021-08-26 03:44:41,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-08-26 03:44:41,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-08-26 03:44:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-08-26 03:44:41,733 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 82 states, 82 states have (on average 2.0) internal successors, (164), 82 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:42,197 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-08-26 03:44:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-08-26 03:44:42,198 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0) internal successors, (164), 82 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-08-26 03:44:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:42,199 INFO L225 Difference]: With dead ends: 168 [2021-08-26 03:44:42,199 INFO L226 Difference]: Without dead ends: 165 [2021-08-26 03:44:42,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2405.6ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-08-26 03:44:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-26 03:44:42,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-08-26 03:44:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0061349693251533) internal successors, (164), 163 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2021-08-26 03:44:42,203 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2021-08-26 03:44:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:42,203 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2021-08-26 03:44:42,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.0) internal successors, (164), 82 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:42,204 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2021-08-26 03:44:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-08-26 03:44:42,204 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:42,204 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:42,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-08-26 03:44:42,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-08-26 03:44:42,409 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:42,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:42,409 INFO L82 PathProgramCache]: Analyzing trace with hash 849787730, now seen corresponding path program 12 times [2021-08-26 03:44:42,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:42,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680428236] [2021-08-26 03:44:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:42,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:45,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:45,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680428236] [2021-08-26 03:44:45,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680428236] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:45,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776481658] [2021-08-26 03:44:45,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 03:44:45,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:45,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:45,034 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:45,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 03:44:45,802 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-08-26 03:44:45,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:45,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 81 conjunts are in the unsatisfiable core [2021-08-26 03:44:45,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:46,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776481658] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:46,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:46,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2021-08-26 03:44:46,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243189285] [2021-08-26 03:44:46,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-08-26 03:44:46,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-08-26 03:44:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-08-26 03:44:46,295 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand has 83 states, 83 states have (on average 2.0) internal successors, (166), 83 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:46,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:46,757 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2021-08-26 03:44:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-08-26 03:44:46,758 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0) internal successors, (166), 83 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-08-26 03:44:46,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:46,758 INFO L225 Difference]: With dead ends: 170 [2021-08-26 03:44:46,759 INFO L226 Difference]: Without dead ends: 167 [2021-08-26 03:44:46,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2466.9ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-08-26 03:44:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-08-26 03:44:46,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-08-26 03:44:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.006060606060606) internal successors, (166), 165 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2021-08-26 03:44:46,763 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2021-08-26 03:44:46,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:46,763 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2021-08-26 03:44:46,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0) internal successors, (166), 83 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2021-08-26 03:44:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-08-26 03:44:46,764 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:46,764 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:46,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:46,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-08-26 03:44:46,981 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:46,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:46,981 INFO L82 PathProgramCache]: Analyzing trace with hash 594696844, now seen corresponding path program 13 times [2021-08-26 03:44:46,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:46,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292532005] [2021-08-26 03:44:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:46,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:49,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:49,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292532005] [2021-08-26 03:44:49,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292532005] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:49,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855446615] [2021-08-26 03:44:49,665 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 03:44:49,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:49,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:49,666 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:49,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 03:44:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:50,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 82 conjunts are in the unsatisfiable core [2021-08-26 03:44:50,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:50,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855446615] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:50,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:50,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2021-08-26 03:44:50,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630526920] [2021-08-26 03:44:50,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-08-26 03:44:50,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-08-26 03:44:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-08-26 03:44:50,964 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 84 states, 84 states have (on average 2.0) internal successors, (168), 84 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:51,401 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2021-08-26 03:44:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-08-26 03:44:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0) internal successors, (168), 84 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-08-26 03:44:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:51,402 INFO L225 Difference]: With dead ends: 172 [2021-08-26 03:44:51,402 INFO L226 Difference]: Without dead ends: 169 [2021-08-26 03:44:51,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2524.2ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-08-26 03:44:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-08-26 03:44:51,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-08-26 03:44:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2021-08-26 03:44:51,407 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2021-08-26 03:44:51,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:51,408 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2021-08-26 03:44:51,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0) internal successors, (168), 84 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2021-08-26 03:44:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-08-26 03:44:51,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:51,409 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:51,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-08-26 03:44:51,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-08-26 03:44:51,635 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash 265491270, now seen corresponding path program 14 times [2021-08-26 03:44:51,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:51,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119796950] [2021-08-26 03:44:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:51,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:54,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:54,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119796950] [2021-08-26 03:44:54,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119796950] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:54,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272203212] [2021-08-26 03:44:54,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:44:54,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:54,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:54,405 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:54,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 03:44:55,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:44:55,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:44:55,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 83 conjunts are in the unsatisfiable core [2021-08-26 03:44:55,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:44:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:55,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272203212] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:55,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:44:55,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2021-08-26 03:44:55,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139130810] [2021-08-26 03:44:55,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-08-26 03:44:55,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:44:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-08-26 03:44:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-08-26 03:44:55,765 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand has 85 states, 85 states have (on average 2.0) internal successors, (170), 85 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:44:56,193 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2021-08-26 03:44:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-08-26 03:44:56,193 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 85 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-08-26 03:44:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:44:56,194 INFO L225 Difference]: With dead ends: 174 [2021-08-26 03:44:56,194 INFO L226 Difference]: Without dead ends: 171 [2021-08-26 03:44:56,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2594.2ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-08-26 03:44:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-08-26 03:44:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2021-08-26 03:44:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.0059171597633136) internal successors, (170), 169 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-08-26 03:44:56,198 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2021-08-26 03:44:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:44:56,199 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-08-26 03:44:56,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 85 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:44:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-08-26 03:44:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-08-26 03:44:56,200 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:44:56,200 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:44:56,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 03:44:56,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:56,421 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:44:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:44:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1726514560, now seen corresponding path program 15 times [2021-08-26 03:44:56,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:44:56,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590076957] [2021-08-26 03:44:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:44:56,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:44:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:44:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:44:59,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:44:59,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590076957] [2021-08-26 03:44:59,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590076957] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:44:59,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876316346] [2021-08-26 03:44:59,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:44:59,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:44:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:44:59,186 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:44:59,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 03:45:00,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-08-26 03:45:00,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:00,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 84 conjunts are in the unsatisfiable core [2021-08-26 03:45:00,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:00,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876316346] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:00,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:00,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2021-08-26 03:45:00,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477085247] [2021-08-26 03:45:00,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-08-26 03:45:00,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-08-26 03:45:00,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-08-26 03:45:00,663 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 86 states, 86 states have (on average 2.0) internal successors, (172), 86 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:01,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:01,114 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2021-08-26 03:45:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-08-26 03:45:01,115 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0) internal successors, (172), 86 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-08-26 03:45:01,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:01,116 INFO L225 Difference]: With dead ends: 176 [2021-08-26 03:45:01,116 INFO L226 Difference]: Without dead ends: 173 [2021-08-26 03:45:01,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2591.9ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-08-26 03:45:01,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-08-26 03:45:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-08-26 03:45:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.0058479532163742) internal successors, (172), 171 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2021-08-26 03:45:01,120 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2021-08-26 03:45:01,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:01,121 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2021-08-26 03:45:01,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.0) internal successors, (172), 86 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2021-08-26 03:45:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-08-26 03:45:01,122 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:01,122 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:01,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-08-26 03:45:01,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-26 03:45:01,335 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:01,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:01,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1315590458, now seen corresponding path program 16 times [2021-08-26 03:45:01,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:01,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805402394] [2021-08-26 03:45:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:01,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:04,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:04,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805402394] [2021-08-26 03:45:04,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805402394] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:04,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66469183] [2021-08-26 03:45:04,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 03:45:04,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:04,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:04,282 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:04,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 03:45:05,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 03:45:05,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:05,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 85 conjunts are in the unsatisfiable core [2021-08-26 03:45:05,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:05,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66469183] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:05,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:05,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2021-08-26 03:45:05,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863039112] [2021-08-26 03:45:05,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-08-26 03:45:05,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:05,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-08-26 03:45:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-08-26 03:45:05,912 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand has 87 states, 87 states have (on average 2.0) internal successors, (174), 87 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:06,427 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2021-08-26 03:45:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-08-26 03:45:06,428 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 87 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-08-26 03:45:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:06,428 INFO L225 Difference]: With dead ends: 178 [2021-08-26 03:45:06,428 INFO L226 Difference]: Without dead ends: 175 [2021-08-26 03:45:06,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2728.7ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-08-26 03:45:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-26 03:45:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-08-26 03:45:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.0057803468208093) internal successors, (174), 173 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2021-08-26 03:45:06,431 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2021-08-26 03:45:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:06,431 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2021-08-26 03:45:06,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 87 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2021-08-26 03:45:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-08-26 03:45:06,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:06,432 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:06,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 03:45:06,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-26 03:45:06,638 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:06,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1554519668, now seen corresponding path program 17 times [2021-08-26 03:45:06,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:06,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742260139] [2021-08-26 03:45:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:06,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:10,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:10,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742260139] [2021-08-26 03:45:10,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742260139] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:10,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825886961] [2021-08-26 03:45:10,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 03:45:10,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:10,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:10,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 03:45:11,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-08-26 03:45:11,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:11,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 86 conjunts are in the unsatisfiable core [2021-08-26 03:45:11,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:11,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825886961] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:11,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:11,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2021-08-26 03:45:11,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072142347] [2021-08-26 03:45:11,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-08-26 03:45:11,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:11,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-08-26 03:45:11,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-08-26 03:45:11,915 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand has 88 states, 88 states have (on average 2.0) internal successors, (176), 88 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:12,356 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2021-08-26 03:45:12,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-08-26 03:45:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0) internal successors, (176), 88 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-08-26 03:45:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:12,357 INFO L225 Difference]: With dead ends: 180 [2021-08-26 03:45:12,357 INFO L226 Difference]: Without dead ends: 177 [2021-08-26 03:45:12,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3234.4ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-08-26 03:45:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-08-26 03:45:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2021-08-26 03:45:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0057142857142858) internal successors, (176), 175 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2021-08-26 03:45:12,361 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2021-08-26 03:45:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:12,361 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2021-08-26 03:45:12,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.0) internal successors, (176), 88 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2021-08-26 03:45:12,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-08-26 03:45:12,362 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:12,362 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:12,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 03:45:12,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-26 03:45:12,573 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash -762743506, now seen corresponding path program 18 times [2021-08-26 03:45:12,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:12,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847627673] [2021-08-26 03:45:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:12,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:15,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:15,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847627673] [2021-08-26 03:45:15,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847627673] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:15,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916005777] [2021-08-26 03:45:15,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 03:45:15,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:15,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:15,663 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:15,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 03:45:16,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-08-26 03:45:16,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:16,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 87 conjunts are in the unsatisfiable core [2021-08-26 03:45:16,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:17,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916005777] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:17,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:17,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2021-08-26 03:45:17,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592276878] [2021-08-26 03:45:17,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-08-26 03:45:17,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-08-26 03:45:17,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-08-26 03:45:17,399 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand has 89 states, 89 states have (on average 2.0) internal successors, (178), 89 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:17,894 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2021-08-26 03:45:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-08-26 03:45:17,895 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0) internal successors, (178), 89 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-08-26 03:45:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:17,896 INFO L225 Difference]: With dead ends: 182 [2021-08-26 03:45:17,896 INFO L226 Difference]: Without dead ends: 179 [2021-08-26 03:45:17,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2912.6ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-08-26 03:45:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-08-26 03:45:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2021-08-26 03:45:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.0056497175141244) internal successors, (178), 177 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2021-08-26 03:45:17,901 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2021-08-26 03:45:17,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:17,901 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2021-08-26 03:45:17,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.0) internal successors, (178), 89 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:17,902 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2021-08-26 03:45:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-08-26 03:45:17,903 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:17,903 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:17,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 03:45:18,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-26 03:45:18,113 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:18,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:18,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1435372904, now seen corresponding path program 19 times [2021-08-26 03:45:18,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:18,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758905812] [2021-08-26 03:45:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:18,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:21,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:21,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758905812] [2021-08-26 03:45:21,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758905812] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:21,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823088452] [2021-08-26 03:45:21,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 03:45:21,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:21,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:21,252 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:21,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 03:45:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:22,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 88 conjunts are in the unsatisfiable core [2021-08-26 03:45:22,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:23,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823088452] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:23,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:23,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2021-08-26 03:45:23,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999870184] [2021-08-26 03:45:23,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-08-26 03:45:23,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-08-26 03:45:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-08-26 03:45:23,045 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand has 90 states, 90 states have (on average 2.0) internal successors, (180), 90 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:23,495 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2021-08-26 03:45:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-08-26 03:45:23,495 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.0) internal successors, (180), 90 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-08-26 03:45:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:23,496 INFO L225 Difference]: With dead ends: 184 [2021-08-26 03:45:23,496 INFO L226 Difference]: Without dead ends: 181 [2021-08-26 03:45:23,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2951.4ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-08-26 03:45:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-08-26 03:45:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2021-08-26 03:45:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.005586592178771) internal successors, (180), 179 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2021-08-26 03:45:23,500 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2021-08-26 03:45:23,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:23,500 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2021-08-26 03:45:23,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.0) internal successors, (180), 90 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:23,501 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2021-08-26 03:45:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-08-26 03:45:23,501 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:23,502 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:23,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-08-26 03:45:23,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:23,728 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:23,729 INFO L82 PathProgramCache]: Analyzing trace with hash 701333282, now seen corresponding path program 20 times [2021-08-26 03:45:23,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:23,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72234836] [2021-08-26 03:45:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:23,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:26,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:26,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72234836] [2021-08-26 03:45:26,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72234836] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:26,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542718931] [2021-08-26 03:45:26,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:45:26,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:26,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:26,954 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:26,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 03:45:28,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:45:28,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:28,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 89 conjunts are in the unsatisfiable core [2021-08-26 03:45:28,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:28,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542718931] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:28,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:28,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2021-08-26 03:45:28,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362872016] [2021-08-26 03:45:28,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-08-26 03:45:28,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-08-26 03:45:28,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-08-26 03:45:28,825 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand has 91 states, 91 states have (on average 2.0) internal successors, (182), 91 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:29,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:29,289 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2021-08-26 03:45:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-08-26 03:45:29,289 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 91 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-08-26 03:45:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:29,290 INFO L225 Difference]: With dead ends: 186 [2021-08-26 03:45:29,290 INFO L226 Difference]: Without dead ends: 183 [2021-08-26 03:45:29,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3022.8ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-08-26 03:45:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-08-26 03:45:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-08-26 03:45:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.0055248618784531) internal successors, (182), 181 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-08-26 03:45:29,293 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2021-08-26 03:45:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:29,293 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-08-26 03:45:29,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 91 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-08-26 03:45:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-08-26 03:45:29,294 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:29,294 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:29,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 03:45:29,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-08-26 03:45:29,494 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:29,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:29,495 INFO L82 PathProgramCache]: Analyzing trace with hash -336106916, now seen corresponding path program 21 times [2021-08-26 03:45:29,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:29,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896545648] [2021-08-26 03:45:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:29,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:32,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:32,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896545648] [2021-08-26 03:45:32,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896545648] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:32,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005588783] [2021-08-26 03:45:32,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:45:32,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:32,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:32,726 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:32,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 03:45:34,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-08-26 03:45:34,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:34,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 90 conjunts are in the unsatisfiable core [2021-08-26 03:45:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:34,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005588783] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:34,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:34,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2021-08-26 03:45:34,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143578944] [2021-08-26 03:45:34,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-08-26 03:45:34,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-08-26 03:45:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-08-26 03:45:34,658 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 92 states, 92 states have (on average 2.0) internal successors, (184), 92 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:35,086 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2021-08-26 03:45:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-08-26 03:45:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0) internal successors, (184), 92 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2021-08-26 03:45:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:35,087 INFO L225 Difference]: With dead ends: 188 [2021-08-26 03:45:35,087 INFO L226 Difference]: Without dead ends: 185 [2021-08-26 03:45:35,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3046.4ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-08-26 03:45:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-26 03:45:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-08-26 03:45:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.005464480874317) internal successors, (184), 183 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2021-08-26 03:45:35,091 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2021-08-26 03:45:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:35,091 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2021-08-26 03:45:35,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.0) internal successors, (184), 92 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2021-08-26 03:45:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-08-26 03:45:35,092 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:35,092 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:35,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-26 03:45:35,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:35,309 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:35,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:35,309 INFO L82 PathProgramCache]: Analyzing trace with hash -883724522, now seen corresponding path program 22 times [2021-08-26 03:45:35,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:35,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602164992] [2021-08-26 03:45:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:35,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:38,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:38,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602164992] [2021-08-26 03:45:38,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602164992] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:38,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496723414] [2021-08-26 03:45:38,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 03:45:38,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:38,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:38,778 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:38,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 03:45:40,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 03:45:40,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:40,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 91 conjunts are in the unsatisfiable core [2021-08-26 03:45:40,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:40,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496723414] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:40,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:40,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2021-08-26 03:45:40,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502774662] [2021-08-26 03:45:40,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-08-26 03:45:40,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-08-26 03:45:40,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-08-26 03:45:40,767 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 93 states, 93 states have (on average 2.0) internal successors, (186), 93 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:41,207 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2021-08-26 03:45:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-08-26 03:45:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 93 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2021-08-26 03:45:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:41,208 INFO L225 Difference]: With dead ends: 190 [2021-08-26 03:45:41,208 INFO L226 Difference]: Without dead ends: 187 [2021-08-26 03:45:41,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3276.9ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-08-26 03:45:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-08-26 03:45:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2021-08-26 03:45:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.0054054054054054) internal successors, (186), 185 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2021-08-26 03:45:41,212 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2021-08-26 03:45:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:41,212 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2021-08-26 03:45:41,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 93 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2021-08-26 03:45:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-08-26 03:45:41,213 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:41,213 INFO L512 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:41,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-08-26 03:45:41,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:41,421 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:41,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:41,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1136733520, now seen corresponding path program 23 times [2021-08-26 03:45:41,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:41,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125879066] [2021-08-26 03:45:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:41,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:44,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:44,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125879066] [2021-08-26 03:45:44,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125879066] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:44,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927110701] [2021-08-26 03:45:44,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 03:45:44,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:44,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:44,769 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:44,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 03:45:46,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-08-26 03:45:46,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:46,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 92 conjunts are in the unsatisfiable core [2021-08-26 03:45:46,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:46,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927110701] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:46,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:46,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2021-08-26 03:45:46,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814641814] [2021-08-26 03:45:46,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-08-26 03:45:46,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:46,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-08-26 03:45:46,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-08-26 03:45:46,808 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand has 94 states, 94 states have (on average 2.0) internal successors, (188), 94 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:47,261 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2021-08-26 03:45:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-08-26 03:45:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0) internal successors, (188), 94 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-08-26 03:45:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:47,262 INFO L225 Difference]: With dead ends: 192 [2021-08-26 03:45:47,262 INFO L226 Difference]: Without dead ends: 189 [2021-08-26 03:45:47,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3149.9ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-08-26 03:45:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-08-26 03:45:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2021-08-26 03:45:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0053475935828877) internal successors, (188), 187 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2021-08-26 03:45:47,265 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2021-08-26 03:45:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:47,266 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2021-08-26 03:45:47,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.0) internal successors, (188), 94 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2021-08-26 03:45:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-08-26 03:45:47,266 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:47,266 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:47,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 03:45:47,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:47,477 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:47,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:47,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1471694090, now seen corresponding path program 24 times [2021-08-26 03:45:47,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:47,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912273651] [2021-08-26 03:45:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:47,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:50,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:50,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912273651] [2021-08-26 03:45:50,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912273651] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:50,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350075858] [2021-08-26 03:45:50,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 03:45:50,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:50,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:50,898 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:50,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-26 03:45:52,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-08-26 03:45:52,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:45:52,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 93 conjunts are in the unsatisfiable core [2021-08-26 03:45:52,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:53,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350075858] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:53,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:53,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2021-08-26 03:45:53,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535162160] [2021-08-26 03:45:53,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-08-26 03:45:53,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:53,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-08-26 03:45:53,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-08-26 03:45:53,121 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand has 95 states, 95 states have (on average 2.0) internal successors, (190), 95 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:53,609 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2021-08-26 03:45:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-08-26 03:45:53,609 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0) internal successors, (190), 95 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2021-08-26 03:45:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:53,610 INFO L225 Difference]: With dead ends: 194 [2021-08-26 03:45:53,610 INFO L226 Difference]: Without dead ends: 191 [2021-08-26 03:45:53,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3244.1ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-08-26 03:45:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-08-26 03:45:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-08-26 03:45:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.0052910052910053) internal successors, (190), 189 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2021-08-26 03:45:53,616 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2021-08-26 03:45:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:53,616 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2021-08-26 03:45:53,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.0) internal successors, (190), 95 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2021-08-26 03:45:53,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-08-26 03:45:53,617 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:53,618 INFO L512 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:45:53,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-26 03:45:53,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:53,833 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:45:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:45:53,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1246254660, now seen corresponding path program 25 times [2021-08-26 03:45:53,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:45:53,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349268606] [2021-08-26 03:45:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:45:53,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:45:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:57,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:45:57,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349268606] [2021-08-26 03:45:57,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349268606] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:57,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128498985] [2021-08-26 03:45:57,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 03:45:57,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:45:57,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:45:57,342 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:45:57,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-26 03:45:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:45:59,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 94 conjunts are in the unsatisfiable core [2021-08-26 03:45:59,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:45:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:45:59,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128498985] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:45:59,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:45:59,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2021-08-26 03:45:59,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695268614] [2021-08-26 03:45:59,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-08-26 03:45:59,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:45:59,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-08-26 03:45:59,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-08-26 03:45:59,550 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand has 96 states, 96 states have (on average 2.0) internal successors, (192), 96 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:45:59,989 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2021-08-26 03:45:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-08-26 03:45:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 96 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-08-26 03:45:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:45:59,991 INFO L225 Difference]: With dead ends: 196 [2021-08-26 03:45:59,991 INFO L226 Difference]: Without dead ends: 193 [2021-08-26 03:45:59,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3313.0ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-08-26 03:45:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-08-26 03:45:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-08-26 03:45:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0052356020942408) internal successors, (192), 191 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2021-08-26 03:45:59,994 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2021-08-26 03:45:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:45:59,994 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2021-08-26 03:45:59,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 96 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:45:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2021-08-26 03:45:59,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-08-26 03:45:59,995 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:45:59,995 INFO L512 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:00,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-26 03:46:00,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-08-26 03:46:00,196 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:00,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:00,196 INFO L82 PathProgramCache]: Analyzing trace with hash -652672770, now seen corresponding path program 26 times [2021-08-26 03:46:00,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:00,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836237261] [2021-08-26 03:46:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:00,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:03,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:03,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836237261] [2021-08-26 03:46:03,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836237261] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:03,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849135118] [2021-08-26 03:46:03,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:46:03,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:03,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:46:03,724 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:46:03,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-26 03:46:05,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:46:05,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:46:05,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 95 conjunts are in the unsatisfiable core [2021-08-26 03:46:05,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:46:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:05,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849135118] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:05,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:46:05,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2021-08-26 03:46:05,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988234434] [2021-08-26 03:46:05,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-08-26 03:46:05,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-08-26 03:46:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-08-26 03:46:05,960 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand has 97 states, 97 states have (on average 2.0) internal successors, (194), 97 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:06,409 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2021-08-26 03:46:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-08-26 03:46:06,409 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 97 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-08-26 03:46:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:06,410 INFO L225 Difference]: With dead ends: 198 [2021-08-26 03:46:06,410 INFO L226 Difference]: Without dead ends: 195 [2021-08-26 03:46:06,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3346.7ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-08-26 03:46:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-08-26 03:46:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-08-26 03:46:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.005181347150259) internal successors, (194), 193 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-08-26 03:46:06,413 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2021-08-26 03:46:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:06,414 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-08-26 03:46:06,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 97 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-08-26 03:46:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-08-26 03:46:06,414 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:46:06,414 INFO L512 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:06,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-26 03:46:06,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-08-26 03:46:06,615 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:06,615 INFO L82 PathProgramCache]: Analyzing trace with hash -160832200, now seen corresponding path program 27 times [2021-08-26 03:46:06,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:06,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726993649] [2021-08-26 03:46:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:06,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:10,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:10,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726993649] [2021-08-26 03:46:10,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726993649] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:10,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269238654] [2021-08-26 03:46:10,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:46:10,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:10,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:46:10,219 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:46:10,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-26 03:46:12,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-08-26 03:46:12,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:46:12,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-26 03:46:12,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:46:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:12,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269238654] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:12,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:46:12,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2021-08-26 03:46:12,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842200835] [2021-08-26 03:46:12,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-08-26 03:46:12,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-08-26 03:46:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-08-26 03:46:12,597 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 98 states, 98 states have (on average 2.0) internal successors, (196), 98 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:13,044 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2021-08-26 03:46:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-08-26 03:46:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 98 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-08-26 03:46:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:13,049 INFO L225 Difference]: With dead ends: 200 [2021-08-26 03:46:13,050 INFO L226 Difference]: Without dead ends: 197 [2021-08-26 03:46:13,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3422.6ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-08-26 03:46:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-08-26 03:46:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-08-26 03:46:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.005128205128205) internal successors, (196), 195 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2021-08-26 03:46:13,053 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2021-08-26 03:46:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:13,053 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2021-08-26 03:46:13,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 98 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2021-08-26 03:46:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-08-26 03:46:13,054 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:46:13,054 INFO L512 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:13,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-08-26 03:46:13,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-08-26 03:46:13,255 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:13,255 INFO L82 PathProgramCache]: Analyzing trace with hash 51553010, now seen corresponding path program 28 times [2021-08-26 03:46:13,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:13,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285374010] [2021-08-26 03:46:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:13,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:16,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:16,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285374010] [2021-08-26 03:46:16,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285374010] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:16,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805591280] [2021-08-26 03:46:16,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 03:46:16,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:16,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:46:16,928 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:46:16,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-26 03:46:18,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 03:46:18,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:46:18,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 97 conjunts are in the unsatisfiable core [2021-08-26 03:46:18,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:46:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:19,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805591280] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:19,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:46:19,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2021-08-26 03:46:19,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960831589] [2021-08-26 03:46:19,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-08-26 03:46:19,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:19,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-08-26 03:46:19,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-08-26 03:46:19,315 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand has 99 states, 99 states have (on average 2.0) internal successors, (198), 99 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:19,836 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2021-08-26 03:46:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-08-26 03:46:19,837 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 99 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-08-26 03:46:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:19,837 INFO L225 Difference]: With dead ends: 202 [2021-08-26 03:46:19,837 INFO L226 Difference]: Without dead ends: 199 [2021-08-26 03:46:19,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3480.0ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-08-26 03:46:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-08-26 03:46:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-08-26 03:46:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.0050761421319796) internal successors, (198), 197 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2021-08-26 03:46:19,841 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2021-08-26 03:46:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:19,842 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2021-08-26 03:46:19,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 99 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2021-08-26 03:46:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-08-26 03:46:19,843 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:46:19,843 INFO L512 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:19,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-26 03:46:20,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-08-26 03:46:20,069 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:20,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2004690388, now seen corresponding path program 29 times [2021-08-26 03:46:20,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:20,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987289651] [2021-08-26 03:46:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:20,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:23,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:23,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987289651] [2021-08-26 03:46:23,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987289651] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:23,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645466208] [2021-08-26 03:46:23,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 03:46:23,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:23,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:46:23,754 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:46:23,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-26 03:46:25,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-08-26 03:46:25,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:46:25,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 98 conjunts are in the unsatisfiable core [2021-08-26 03:46:25,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:46:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:26,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645466208] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:26,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:46:26,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2021-08-26 03:46:26,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512378567] [2021-08-26 03:46:26,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-08-26 03:46:26,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-08-26 03:46:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-08-26 03:46:26,234 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand has 100 states, 100 states have (on average 2.0) internal successors, (200), 100 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:26,747 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-08-26 03:46:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-08-26 03:46:26,748 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.0) internal successors, (200), 100 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2021-08-26 03:46:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:26,749 INFO L225 Difference]: With dead ends: 204 [2021-08-26 03:46:26,749 INFO L226 Difference]: Without dead ends: 201 [2021-08-26 03:46:26,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3507.1ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-08-26 03:46:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-08-26 03:46:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-08-26 03:46:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.0050251256281406) internal successors, (200), 199 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2021-08-26 03:46:26,752 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2021-08-26 03:46:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:26,753 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2021-08-26 03:46:26,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.0) internal successors, (200), 100 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2021-08-26 03:46:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-08-26 03:46:26,754 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:46:26,754 INFO L512 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:26,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-08-26 03:46:26,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:26,961 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:26,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:26,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1925327590, now seen corresponding path program 30 times [2021-08-26 03:46:26,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:26,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21345203] [2021-08-26 03:46:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:26,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:30,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:30,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21345203] [2021-08-26 03:46:30,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21345203] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:30,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068569160] [2021-08-26 03:46:30,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 03:46:30,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:30,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:46:30,731 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:46:30,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-26 03:46:32,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-08-26 03:46:32,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:46:32,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 99 conjunts are in the unsatisfiable core [2021-08-26 03:46:32,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:46:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:33,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068569160] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:33,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:46:33,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2021-08-26 03:46:33,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427188984] [2021-08-26 03:46:33,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-08-26 03:46:33,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-08-26 03:46:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-08-26 03:46:33,338 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand has 101 states, 101 states have (on average 2.0) internal successors, (202), 101 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:33,825 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2021-08-26 03:46:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-08-26 03:46:33,825 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0) internal successors, (202), 101 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-08-26 03:46:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:33,826 INFO L225 Difference]: With dead ends: 206 [2021-08-26 03:46:33,826 INFO L226 Difference]: Without dead ends: 203 [2021-08-26 03:46:33,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3585.6ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-08-26 03:46:33,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-08-26 03:46:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-08-26 03:46:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0049751243781095) internal successors, (202), 201 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2021-08-26 03:46:33,830 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2021-08-26 03:46:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:33,830 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2021-08-26 03:46:33,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0) internal successors, (202), 101 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2021-08-26 03:46:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-08-26 03:46:33,831 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:46:33,832 INFO L512 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:33,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-26 03:46:34,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-08-26 03:46:34,049 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash -898616032, now seen corresponding path program 31 times [2021-08-26 03:46:34,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:34,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484847856] [2021-08-26 03:46:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:34,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:37,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:37,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484847856] [2021-08-26 03:46:37,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484847856] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:37,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611012833] [2021-08-26 03:46:37,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 03:46:37,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:37,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:46:37,985 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:46:37,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-26 03:46:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:40,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 100 conjunts are in the unsatisfiable core [2021-08-26 03:46:40,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:46:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:40,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611012833] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:40,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:46:40,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2021-08-26 03:46:40,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726060445] [2021-08-26 03:46:40,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-08-26 03:46:40,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-08-26 03:46:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-08-26 03:46:40,632 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 102 states, 102 states have (on average 2.0) internal successors, (204), 102 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:41,104 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2021-08-26 03:46:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-08-26 03:46:41,105 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 102 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-08-26 03:46:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:41,106 INFO L225 Difference]: With dead ends: 208 [2021-08-26 03:46:41,106 INFO L226 Difference]: Without dead ends: 205 [2021-08-26 03:46:41,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3728.1ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-08-26 03:46:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-08-26 03:46:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-08-26 03:46:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0049261083743843) internal successors, (204), 203 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-08-26 03:46:41,109 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2021-08-26 03:46:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:41,109 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-08-26 03:46:41,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 102 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-08-26 03:46:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-08-26 03:46:41,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:46:41,110 INFO L512 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:41,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-08-26 03:46:41,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:41,311 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:41,311 INFO L82 PathProgramCache]: Analyzing trace with hash -289105702, now seen corresponding path program 32 times [2021-08-26 03:46:41,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:41,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548577071] [2021-08-26 03:46:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:41,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:45,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:45,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548577071] [2021-08-26 03:46:45,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548577071] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:45,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666368151] [2021-08-26 03:46:45,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:46:45,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:45,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:46:45,221 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:46:45,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-26 03:46:47,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:46:47,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:46:47,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 101 conjunts are in the unsatisfiable core [2021-08-26 03:46:47,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:46:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:48,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666368151] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:48,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:46:48,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2021-08-26 03:46:48,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229656860] [2021-08-26 03:46:48,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-08-26 03:46:48,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:48,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-08-26 03:46:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-08-26 03:46:48,080 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 103 states, 103 states have (on average 2.0) internal successors, (206), 103 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:48,557 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2021-08-26 03:46:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-08-26 03:46:48,557 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 103 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-08-26 03:46:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:48,558 INFO L225 Difference]: With dead ends: 209 [2021-08-26 03:46:48,560 INFO L226 Difference]: Without dead ends: 206 [2021-08-26 03:46:48,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3718.3ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-08-26 03:46:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-08-26 03:46:48,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-08-26 03:46:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.0048780487804878) internal successors, (206), 205 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-08-26 03:46:48,564 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2021-08-26 03:46:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:48,564 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-08-26 03:46:48,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 103 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-08-26 03:46:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-08-26 03:46:48,565 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:46:48,565 INFO L512 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:48,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-08-26 03:46:48,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:48,766 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:48,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:48,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1334769172, now seen corresponding path program 33 times [2021-08-26 03:46:48,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:48,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770773598] [2021-08-26 03:46:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:48,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:50,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:50,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770773598] [2021-08-26 03:46:50,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770773598] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:50,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645271276] [2021-08-26 03:46:50,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:46:50,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:46:50,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:46:50,379 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:46:50,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-26 03:46:52,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-08-26 03:46:52,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:46:52,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 105 conjunts are in the unsatisfiable core [2021-08-26 03:46:52,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:46:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:54,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645271276] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:46:54,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:46:54,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2021-08-26 03:46:54,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278333556] [2021-08-26 03:46:54,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-08-26 03:46:54,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:54,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-08-26 03:46:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2021-08-26 03:46:54,159 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 55 states, 55 states have (on average 3.7636363636363637) internal successors, (207), 55 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:55,276 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2021-08-26 03:46:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-26 03:46:55,277 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.7636363636363637) internal successors, (207), 55 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2021-08-26 03:46:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:55,278 INFO L225 Difference]: With dead ends: 212 [2021-08-26 03:46:55,278 INFO L226 Difference]: Without dead ends: 209 [2021-08-26 03:46:55,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1422.8ms TimeCoverageRelationStatistics Valid=113, Invalid=2967, Unknown=0, NotChecked=0, Total=3080 [2021-08-26 03:46:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-08-26 03:46:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-08-26 03:46:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0048309178743962) internal successors, (208), 207 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2021-08-26 03:46:55,283 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2021-08-26 03:46:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:55,284 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2021-08-26 03:46:55,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.7636363636363637) internal successors, (207), 55 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2021-08-26 03:46:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-08-26 03:46:55,285 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:46:55,285 INFO L512 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:46:55,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-08-26 03:46:55,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-08-26 03:46:55,497 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:46:55,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:46:55,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1489572658, now seen corresponding path program 34 times [2021-08-26 03:46:55,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:46:55,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49407089] [2021-08-26 03:46:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:46:55,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:46:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:46:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:46:56,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:46:56,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49407089] [2021-08-26 03:46:56,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49407089] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:46:56,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:46:56,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-08-26 03:46:56,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154727287] [2021-08-26 03:46:56,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-08-26 03:46:56,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:46:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-26 03:46:56,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-26 03:46:56,663 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand has 52 states, 52 states have (on average 3.980769230769231) internal successors, (207), 52 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:57,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:46:57,216 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2021-08-26 03:46:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-26 03:46:57,217 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.980769230769231) internal successors, (207), 52 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-08-26 03:46:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:46:57,217 INFO L225 Difference]: With dead ends: 208 [2021-08-26 03:46:57,217 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:46:57,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1019.8ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-26 03:46:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:46:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:46:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:46:57,218 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2021-08-26 03:46:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:46:57,219 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:46:57,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.980769230769231) internal successors, (207), 52 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:46:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:46:57,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:46:57,222 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:46:57,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-26 03:46:57,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:46:57,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:57,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:46:58,389 INFO L853 garLoopResultBuilder]: At program point L927(lines 181 928) the Hoare annotation is: (and (<= 28 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 28) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,390 INFO L853 garLoopResultBuilder]: At program point L795(lines 247 796) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 39) (<= 39 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,390 INFO L853 garLoopResultBuilder]: At program point L663(lines 313 664) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 50 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 50) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,390 INFO L853 garLoopResultBuilder]: At program point L531(lines 379 532) the Hoare annotation is: (and (<= 61 ULTIMATE.start_main_~main__x~0) (<= 61 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 61) (<= ULTIMATE.start_main_~main__y~0 61)) [2021-08-26 03:46:58,390 INFO L857 garLoopResultBuilder]: For program point L367(lines 367 556) no Hoare annotation was computed. [2021-08-26 03:46:58,390 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 688) no Hoare annotation was computed. [2021-08-26 03:46:58,390 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 820) no Hoare annotation was computed. [2021-08-26 03:46:58,390 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 952) no Hoare annotation was computed. [2021-08-26 03:46:58,390 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 1084) no Hoare annotation was computed. [2021-08-26 03:46:58,391 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 1216) no Hoare annotation was computed. [2021-08-26 03:46:58,391 INFO L853 garLoopResultBuilder]: At program point L1227(lines 31 1228) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 3) (<= 3 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,391 INFO L853 garLoopResultBuilder]: At program point L1095(lines 97 1096) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 14 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 14) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,391 INFO L853 garLoopResultBuilder]: At program point L963(lines 163 964) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 25 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 25) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,391 INFO L853 garLoopResultBuilder]: At program point L831(lines 229 832) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 36) (<= 36 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,391 INFO L853 garLoopResultBuilder]: At program point L699(lines 295 700) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 47) (<= 47 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,391 INFO L853 garLoopResultBuilder]: At program point L567(lines 361 568) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 58) (<= 58 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 58) (<= 58 ULTIMATE.start_main_~main__y~0)) [2021-08-26 03:46:58,392 INFO L857 garLoopResultBuilder]: For program point L403(lines 403 484) no Hoare annotation was computed. [2021-08-26 03:46:58,392 INFO L857 garLoopResultBuilder]: For program point L337(lines 337 616) no Hoare annotation was computed. [2021-08-26 03:46:58,392 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 748) no Hoare annotation was computed. [2021-08-26 03:46:58,392 INFO L857 garLoopResultBuilder]: For program point L205(lines 205 880) no Hoare annotation was computed. [2021-08-26 03:46:58,392 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 1012) no Hoare annotation was computed. [2021-08-26 03:46:58,392 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 1144) no Hoare annotation was computed. [2021-08-26 03:46:58,392 INFO L853 garLoopResultBuilder]: At program point L1131(lines 79 1132) the Hoare annotation is: (and (<= 11 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 11) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,392 INFO L853 garLoopResultBuilder]: At program point L999(lines 145 1000) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 22 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 22) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,393 INFO L853 garLoopResultBuilder]: At program point L867(lines 211 868) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 33) (<= 33 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,393 INFO L853 garLoopResultBuilder]: At program point L735(lines 277 736) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 44) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 44 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,393 INFO L853 garLoopResultBuilder]: At program point L603(lines 343 604) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 55) (<= ULTIMATE.start_main_~main__x~0 55) (<= 55 ULTIMATE.start_main_~main__y~0) (<= 55 ULTIMATE.start_main_~main__x~0)) [2021-08-26 03:46:58,393 INFO L853 garLoopResultBuilder]: At program point L471(lines 409 472) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 66) (<= 66 ULTIMATE.start_main_~main__x~0) (<= 66 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 66)) [2021-08-26 03:46:58,393 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 544) no Hoare annotation was computed. [2021-08-26 03:46:58,393 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 676) no Hoare annotation was computed. [2021-08-26 03:46:58,393 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 808) no Hoare annotation was computed. [2021-08-26 03:46:58,393 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 940) no Hoare annotation was computed. [2021-08-26 03:46:58,393 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 1072) no Hoare annotation was computed. [2021-08-26 03:46:58,393 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 1204) no Hoare annotation was computed. [2021-08-26 03:46:58,393 INFO L853 garLoopResultBuilder]: At program point L1167(lines 61 1168) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 8) (<= 8 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,393 INFO L853 garLoopResultBuilder]: At program point L1035(lines 127 1036) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 19) (<= 19 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,393 INFO L853 garLoopResultBuilder]: At program point L903(lines 193 904) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 30 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 30) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,393 INFO L853 garLoopResultBuilder]: At program point L771(lines 259 772) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 41) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 41 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,394 INFO L853 garLoopResultBuilder]: At program point L639(lines 325 640) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 52) (<= 52 ULTIMATE.start_main_~main__y~0) (<= 52 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 52)) [2021-08-26 03:46:58,394 INFO L853 garLoopResultBuilder]: At program point L507(lines 391 508) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 63) (<= 63 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 63) (<= 63 ULTIMATE.start_main_~main__x~0)) [2021-08-26 03:46:58,394 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 451) no Hoare annotation was computed. [2021-08-26 03:46:58,394 INFO L857 garLoopResultBuilder]: For program point L409(lines 409 472) no Hoare annotation was computed. [2021-08-26 03:46:58,394 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 604) no Hoare annotation was computed. [2021-08-26 03:46:58,394 INFO L857 garLoopResultBuilder]: For program point L277(lines 277 736) no Hoare annotation was computed. [2021-08-26 03:46:58,394 INFO L857 garLoopResultBuilder]: For program point L211(lines 211 868) no Hoare annotation was computed. [2021-08-26 03:46:58,394 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 1000) no Hoare annotation was computed. [2021-08-26 03:46:58,394 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 1132) no Hoare annotation was computed. [2021-08-26 03:46:58,394 INFO L853 garLoopResultBuilder]: At program point L1203(lines 43 1204) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 5) (<= 5 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,394 INFO L853 garLoopResultBuilder]: At program point L1071(lines 109 1072) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 16 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 16) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,394 INFO L853 garLoopResultBuilder]: At program point L939(lines 175 940) the Hoare annotation is: (and (<= 27 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 27)) [2021-08-26 03:46:58,394 INFO L853 garLoopResultBuilder]: At program point L807(lines 241 808) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 38) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 38 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,395 INFO L853 garLoopResultBuilder]: At program point L675(lines 307 676) the Hoare annotation is: (and (<= 49 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 49)) [2021-08-26 03:46:58,395 INFO L853 garLoopResultBuilder]: At program point L543(lines 373 544) the Hoare annotation is: (and (<= 60 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 60) (<= 60 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 60)) [2021-08-26 03:46:58,395 INFO L857 garLoopResultBuilder]: For program point L444(line 444) no Hoare annotation was computed. [2021-08-26 03:46:58,395 INFO L857 garLoopResultBuilder]: For program point L379(lines 379 532) no Hoare annotation was computed. [2021-08-26 03:46:58,395 INFO L857 garLoopResultBuilder]: For program point L313(lines 313 664) no Hoare annotation was computed. [2021-08-26 03:46:58,395 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 796) no Hoare annotation was computed. [2021-08-26 03:46:58,395 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 928) no Hoare annotation was computed. [2021-08-26 03:46:58,395 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 1060) no Hoare annotation was computed. [2021-08-26 03:46:58,396 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 1192) no Hoare annotation was computed. [2021-08-26 03:46:58,396 INFO L853 garLoopResultBuilder]: At program point L1239(lines 25 1240) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 2) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50) (<= 2 ULTIMATE.start_main_~main__x~0)) [2021-08-26 03:46:58,396 INFO L853 garLoopResultBuilder]: At program point L1107(lines 91 1108) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 13) (<= ULTIMATE.start_main_~main__y~0 50) (<= 13 ULTIMATE.start_main_~main__x~0)) [2021-08-26 03:46:58,396 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 1257) no Hoare annotation was computed. [2021-08-26 03:46:58,396 INFO L853 garLoopResultBuilder]: At program point L975(lines 157 976) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 24 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 24) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,396 INFO L853 garLoopResultBuilder]: At program point L843(lines 223 844) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 35) (<= 35 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,396 INFO L853 garLoopResultBuilder]: At program point L711(lines 289 712) the Hoare annotation is: (and (<= 46 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 46) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,396 INFO L853 garLoopResultBuilder]: At program point L579(lines 355 580) the Hoare annotation is: (and (<= 57 ULTIMATE.start_main_~main__y~0) (<= 57 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 57) (<= ULTIMATE.start_main_~main__y~0 57)) [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L415(lines 415 460) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L349(lines 349 592) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 724) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L217(lines 217 856) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 988) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L85(lines 85 1120) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 1252) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L853 garLoopResultBuilder]: At program point L1143(lines 73 1144) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 10) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 10 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,397 INFO L853 garLoopResultBuilder]: At program point L1011(lines 139 1012) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 21 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 21) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,397 INFO L853 garLoopResultBuilder]: At program point L879(lines 205 880) the Hoare annotation is: (and (<= 32 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 32) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,397 INFO L853 garLoopResultBuilder]: At program point L747(lines 271 748) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 43) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 43 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,397 INFO L853 garLoopResultBuilder]: At program point L615(lines 337 616) the Hoare annotation is: (and (<= 54 ULTIMATE.start_main_~main__x~0) (<= 54 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 54) (<= ULTIMATE.start_main_~main__x~0 54)) [2021-08-26 03:46:58,397 INFO L853 garLoopResultBuilder]: At program point L483(lines 403 484) the Hoare annotation is: (and (<= 65 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 65) (<= ULTIMATE.start_main_~main__y~0 65) (<= 65 ULTIMATE.start_main_~main__y~0)) [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 520) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 652) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L253(lines 253 784) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 916) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 1048) no Hoare annotation was computed. [2021-08-26 03:46:58,397 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 1180) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L1179(lines 55 1180) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 7) (<= 7 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L1047(lines 121 1048) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 18) (<= ULTIMATE.start_main_~main__y~0 50) (<= 18 ULTIMATE.start_main_~main__x~0)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L915(lines 187 916) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 29) (<= 29 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L783(lines 253 784) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 40) (<= ULTIMATE.start_main_~main__y~0 50) (<= 40 ULTIMATE.start_main_~main__x~0)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L651(lines 319 652) the Hoare annotation is: (and (<= 51 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 51) (<= 51 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 51)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L519(lines 385 520) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 62) (<= ULTIMATE.start_main_~main__y~0 62) (<= 62 ULTIMATE.start_main_~main__x~0) (<= 62 ULTIMATE.start_main_~main__y~0)) [2021-08-26 03:46:58,398 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 580) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L857 garLoopResultBuilder]: For program point L289(lines 289 712) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L857 garLoopResultBuilder]: For program point L223(lines 223 844) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 976) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 1108) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 1240) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L857 garLoopResultBuilder]: For program point L422(lines 422 433) no Hoare annotation was computed. [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L1215(lines 37 1216) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 4 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 4) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L1083(lines 103 1084) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 15) (<= 15 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L951(lines 169 952) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 26) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 26 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L819(lines 235 820) the Hoare annotation is: (and (<= 37 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 37) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,398 INFO L853 garLoopResultBuilder]: At program point L687(lines 301 688) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 48 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 48) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,399 INFO L853 garLoopResultBuilder]: At program point L555(lines 367 556) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 59) (<= ULTIMATE.start_main_~main__x~0 59) (<= 59 ULTIMATE.start_main_~main__x~0) (<= 59 ULTIMATE.start_main_~main__y~0)) [2021-08-26 03:46:58,399 INFO L857 garLoopResultBuilder]: For program point L391(lines 391 508) no Hoare annotation was computed. [2021-08-26 03:46:58,399 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 640) no Hoare annotation was computed. [2021-08-26 03:46:58,399 INFO L857 garLoopResultBuilder]: For program point L259(lines 259 772) no Hoare annotation was computed. [2021-08-26 03:46:58,399 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 904) no Hoare annotation was computed. [2021-08-26 03:46:58,399 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 1036) no Hoare annotation was computed. [2021-08-26 03:46:58,399 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 1168) no Hoare annotation was computed. [2021-08-26 03:46:58,399 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:46:58,399 INFO L853 garLoopResultBuilder]: At program point L1251(lines 19 1252) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 1) (<= 1 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,399 INFO L853 garLoopResultBuilder]: At program point L1119(lines 85 1120) the Hoare annotation is: (and (<= 12 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 12) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,399 INFO L853 garLoopResultBuilder]: At program point L987(lines 151 988) the Hoare annotation is: (and (<= 23 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50) (<= ULTIMATE.start_main_~main__x~0 23)) [2021-08-26 03:46:58,399 INFO L853 garLoopResultBuilder]: At program point L855(lines 217 856) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 34) (<= 34 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,399 INFO L853 garLoopResultBuilder]: At program point L723(lines 283 724) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 45) (<= 45 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,399 INFO L853 garLoopResultBuilder]: At program point L591(lines 349 592) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__y~0 56) (<= 56 ULTIMATE.start_main_~main__y~0) (<= 56 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 56)) [2021-08-26 03:46:58,399 INFO L853 garLoopResultBuilder]: At program point L459(lines 415 460) the Hoare annotation is: (or (and (<= 94 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 94) (<= ULTIMATE.start_main_~main__x~0 94) (<= 94 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 83) (<= ULTIMATE.start_main_~main__x~0 83) (<= 83 ULTIMATE.start_main_~main__x~0) (<= 83 ULTIMATE.start_main_~main__y~0)) (and (<= 89 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 89) (<= 89 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 89)) (and (<= ULTIMATE.start_main_~main__x~0 88) (<= ULTIMATE.start_main_~main__y~0 88) (<= 88 ULTIMATE.start_main_~main__x~0) (<= 88 ULTIMATE.start_main_~main__y~0)) (and (<= 85 ULTIMATE.start_main_~main__x~0) (<= 85 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 85) (<= ULTIMATE.start_main_~main__y~0 85)) (and (<= 81 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 81) (<= 81 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 81)) (and (<= 77 ULTIMATE.start_main_~main__x~0) (<= 77 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 77) (<= ULTIMATE.start_main_~main__y~0 77)) (and (<= 93 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 93) (<= ULTIMATE.start_main_~main__y~0 93) (<= 93 ULTIMATE.start_main_~main__y~0)) (and (<= 70 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 70) (<= ULTIMATE.start_main_~main__y~0 70) (<= 70 ULTIMATE.start_main_~main__x~0)) (and (<= 95 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 95) (<= ULTIMATE.start_main_~main__x~0 95) (<= 95 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 69) (<= 69 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 69) (<= 69 ULTIMATE.start_main_~main__x~0)) (and (<= ULTIMATE.start_main_~main__x~0 72) (<= ULTIMATE.start_main_~main__y~0 72) (<= 72 ULTIMATE.start_main_~main__y~0) (<= 72 ULTIMATE.start_main_~main__x~0)) (and (<= 100 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 100) (< 99 ULTIMATE.start_main_~main__y~0)) (and (<= 97 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 97) (<= ULTIMATE.start_main_~main__x~0 97) (<= 97 ULTIMATE.start_main_~main__x~0)) (and (<= 91 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 91) (<= 91 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 91)) (and (<= 98 ULTIMATE.start_main_~main__y~0) (<= 98 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 98) (<= ULTIMATE.start_main_~main__y~0 98)) (and (<= 96 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 96) (<= 96 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 96)) (and (<= 82 ULTIMATE.start_main_~main__y~0) (<= 82 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 82) (<= ULTIMATE.start_main_~main__x~0 82)) (and (<= ULTIMATE.start_main_~main__x~0 76) (<= 76 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 76) (<= 76 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 67) (<= 67 ULTIMATE.start_main_~main__x~0) (<= 67 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 67)) (and (<= ULTIMATE.start_main_~main__x~0 75) (<= ULTIMATE.start_main_~main__y~0 75) (<= 75 ULTIMATE.start_main_~main__y~0) (<= 75 ULTIMATE.start_main_~main__x~0)) (and (<= ULTIMATE.start_main_~main__y~0 78) (<= 78 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 78) (<= 78 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 68) (<= ULTIMATE.start_main_~main__x~0 68) (<= 68 ULTIMATE.start_main_~main__x~0) (<= 68 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 86) (<= ULTIMATE.start_main_~main__y~0 86) (<= 86 ULTIMATE.start_main_~main__x~0) (<= 86 ULTIMATE.start_main_~main__y~0)) (and (<= 99 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 99) (<= 99 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 99)) (and (<= 79 ULTIMATE.start_main_~main__y~0) (<= 79 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 79) (<= ULTIMATE.start_main_~main__y~0 79)) (and (<= 90 ULTIMATE.start_main_~main__x~0) (<= 90 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 90) (<= ULTIMATE.start_main_~main__x~0 90)) (and (<= ULTIMATE.start_main_~main__x~0 87) (<= ULTIMATE.start_main_~main__y~0 87) (<= 87 ULTIMATE.start_main_~main__y~0) (<= 87 ULTIMATE.start_main_~main__x~0)) (and (<= 71 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 71) (<= 71 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 71)) (and (<= ULTIMATE.start_main_~main__x~0 92) (<= ULTIMATE.start_main_~main__y~0 92) (<= 92 ULTIMATE.start_main_~main__x~0) (<= 92 ULTIMATE.start_main_~main__y~0)) (and (<= 73 ULTIMATE.start_main_~main__y~0) (<= 73 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 73) (<= ULTIMATE.start_main_~main__y~0 73)) (and (<= ULTIMATE.start_main_~main__y~0 74) (<= 74 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 74) (<= 74 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 80) (<= 80 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 80) (<= 80 ULTIMATE.start_main_~main__y~0)) (and (<= 84 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 84) (<= 84 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 84))) [2021-08-26 03:46:58,399 INFO L857 garLoopResultBuilder]: For program point L361(lines 361 568) no Hoare annotation was computed. [2021-08-26 03:46:58,400 INFO L857 garLoopResultBuilder]: For program point L295(lines 295 700) no Hoare annotation was computed. [2021-08-26 03:46:58,400 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 832) no Hoare annotation was computed. [2021-08-26 03:46:58,400 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 964) no Hoare annotation was computed. [2021-08-26 03:46:58,400 INFO L857 garLoopResultBuilder]: For program point L97(lines 97 1096) no Hoare annotation was computed. [2021-08-26 03:46:58,400 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 1228) no Hoare annotation was computed. [2021-08-26 03:46:58,400 INFO L853 garLoopResultBuilder]: At program point L1155(lines 67 1156) the Hoare annotation is: (and (<= 9 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 9) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,400 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:46:58,400 INFO L853 garLoopResultBuilder]: At program point L1023(lines 133 1024) the Hoare annotation is: (and (<= 20 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 20) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,400 INFO L853 garLoopResultBuilder]: At program point L891(lines 199 892) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 31) (<= 31 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,400 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 444) no Hoare annotation was computed. [2021-08-26 03:46:58,400 INFO L853 garLoopResultBuilder]: At program point L759(lines 265 760) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 42 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 42) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,400 INFO L853 garLoopResultBuilder]: At program point L627(lines 331 628) the Hoare annotation is: (and (<= 53 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 53) (<= 53 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 53)) [2021-08-26 03:46:58,401 INFO L853 garLoopResultBuilder]: At program point L495(lines 397 496) the Hoare annotation is: (and (<= 64 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 64) (<= 64 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 64)) [2021-08-26 03:46:58,401 INFO L857 garLoopResultBuilder]: For program point L397(lines 397 496) no Hoare annotation was computed. [2021-08-26 03:46:58,401 INFO L857 garLoopResultBuilder]: For program point L331(lines 331 628) no Hoare annotation was computed. [2021-08-26 03:46:58,401 INFO L857 garLoopResultBuilder]: For program point L265(lines 265 760) no Hoare annotation was computed. [2021-08-26 03:46:58,401 INFO L860 garLoopResultBuilder]: At program point L1256(lines 13 1258) the Hoare annotation is: true [2021-08-26 03:46:58,401 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 892) no Hoare annotation was computed. [2021-08-26 03:46:58,401 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 1024) no Hoare annotation was computed. [2021-08-26 03:46:58,401 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 1156) no Hoare annotation was computed. [2021-08-26 03:46:58,402 INFO L853 garLoopResultBuilder]: At program point L1191(lines 49 1192) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 6) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 6 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,402 INFO L853 garLoopResultBuilder]: At program point L1059(lines 115 1060) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 17 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 17) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-08-26 03:46:58,405 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:46:58,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:46:58 BoogieIcfgContainer [2021-08-26 03:46:58,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:46:58,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:46:58,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:46:58,438 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:46:58,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:43:37" (3/4) ... [2021-08-26 03:46:58,440 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:46:58,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 03:46:58,456 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:46:58,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:46:58,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:46:58,543 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:46:58,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:46:58,548 INFO L168 Benchmark]: Toolchain (without parser) took 202134.92 ms. Allocated memory was 50.3 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 27.2 MB in the beginning and 810.8 MB in the end (delta: -783.5 MB). Peak memory consumption was 408.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:46:58,548 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 33.0 MB in the beginning and 32.9 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:46:58,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.95 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 36.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:46:58,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.78 ms. Allocated memory is still 60.8 MB. Free memory was 36.4 MB in the beginning and 33.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:46:58,549 INFO L168 Benchmark]: Boogie Preprocessor took 26.65 ms. Allocated memory is still 60.8 MB. Free memory was 33.5 MB in the beginning and 31.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:46:58,550 INFO L168 Benchmark]: RCFGBuilder took 939.53 ms. Allocated memory is still 60.8 MB. Free memory was 31.5 MB in the beginning and 29.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-08-26 03:46:58,550 INFO L168 Benchmark]: TraceAbstraction took 200569.85 ms. Allocated memory was 60.8 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 28.5 MB in the beginning and 822.3 MB in the end (delta: -793.8 MB). Peak memory consumption was 388.7 MB. Max. memory is 16.1 GB. [2021-08-26 03:46:58,550 INFO L168 Benchmark]: Witness Printer took 106.13 ms. Allocated memory is still 1.2 GB. Free memory was 822.3 MB in the beginning and 810.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:46:58,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 33.0 MB in the beginning and 32.9 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 441.95 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 36.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.78 ms. Allocated memory is still 60.8 MB. Free memory was 36.4 MB in the beginning and 33.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.65 ms. Allocated memory is still 60.8 MB. Free memory was 33.5 MB in the beginning and 31.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 939.53 ms. Allocated memory is still 60.8 MB. Free memory was 31.5 MB in the beginning and 29.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 200569.85 ms. Allocated memory was 60.8 MB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Free memory was 28.5 MB in the beginning and 822.3 MB in the end (delta: -793.8 MB). Peak memory consumption was 388.7 MB. Max. memory is 16.1 GB. * Witness Printer took 106.13 ms. Allocated memory is still 1.2 GB. Free memory was 822.3 MB in the beginning and 810.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 444]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 200496.1ms, OverallIterations: 56, TraceHistogramMax: 34, EmptinessCheckTime: 63.6ms, AutomataDifference: 25635.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1166.7ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3158 SDtfs, 11519 SDslu, 8568 SDs, 0 SdLazy, 39099 SolverSat, 11212 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17614.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9178 GetRequests, 5753 SyntacticMatches, 2 SemanticMatches, 3423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5280 ImplicationChecksByTransitivity, 101295.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=2, InterpolantAutomatonStates: 3501, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 291.5ms AutomataMinimizationTime, 56 MinimizatonAttempts, 35 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 68 LocationsWithAnnotation, 68 PreInvPairs, 169 NumberOfFragments, 1299 HoareAnnotationTreeSize, 68 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 87.6ms HoareSimplificationTime, 68 FomulaSimplificationsInter, 297 FormulaSimplificationTreeSizeReductionInter, 1066.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 517.1ms SsaConstructionTime, 2956.8ms SatisfiabilityAnalysisTime, 126983.9ms InterpolantComputationTime, 14683 NumberOfCodeBlocks, 14683 NumberOfCodeBlocksAsserted, 383 NumberOfCheckSat, 14594 ConstructedInterpolants, 0 QuantifiedInterpolants, 41043 SizeOfPredicates, 2 NumberOfNonLiveVariables, 14883 ConjunctsInSsa, 2841 ConjunctsInUnsatCore, 89 InterpolantComputations, 23 PerfectInterpolantSequences, 1156/26214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 8) && 8 <= main__x) && main__y <= 50 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 31) && 31 <= main__x) && main__y <= 50 - InvariantResult [Line: 247]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 39) && 39 <= main__x) && main__y <= 50 - InvariantResult [Line: 223]: Loop Invariant Derived loop invariant: ((main__x <= 35 && 35 <= main__x) && 50 <= main__y) && main__y <= 50 - InvariantResult [Line: 241]: Loop Invariant Derived loop invariant: ((main__x <= 38 && 50 <= main__y) && 38 <= main__x) && main__y <= 50 - InvariantResult [Line: 337]: Loop Invariant Derived loop invariant: ((54 <= main__x && 54 <= main__y) && main__y <= 54) && main__x <= 54 - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: ((50 <= main__y && 16 <= main__x) && main__x <= 16) && main__y <= 50 - InvariantResult [Line: 415]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((94 <= main__x && main__y <= 94) && main__x <= 94) && 94 <= main__y) || (((main__y <= 83 && main__x <= 83) && 83 <= main__x) && 83 <= main__y)) || (((89 <= main__x && main__y <= 89) && 89 <= main__y) && main__x <= 89)) || (((main__x <= 88 && main__y <= 88) && 88 <= main__x) && 88 <= main__y)) || (((85 <= main__x && 85 <= main__y) && main__x <= 85) && main__y <= 85)) || (((81 <= main__x && main__y <= 81) && 81 <= main__y) && main__x <= 81)) || (((77 <= main__x && 77 <= main__y) && main__x <= 77) && main__y <= 77)) || (((93 <= main__x && main__x <= 93) && main__y <= 93) && 93 <= main__y)) || (((70 <= main__y && main__x <= 70) && main__y <= 70) && 70 <= main__x)) || (((95 <= main__x && main__y <= 95) && main__x <= 95) && 95 <= main__y)) || (((main__x <= 69 && 69 <= main__y) && main__y <= 69) && 69 <= main__x)) || (((main__x <= 72 && main__y <= 72) && 72 <= main__y) && 72 <= main__x)) || ((100 <= main__x && main__y <= 100) && 99 < main__y)) || (((97 <= main__y && main__y <= 97) && main__x <= 97) && 97 <= main__x)) || (((91 <= main__y && main__x <= 91) && 91 <= main__x) && main__y <= 91)) || (((98 <= main__y && 98 <= main__x) && main__x <= 98) && main__y <= 98)) || (((96 <= main__y && main__x <= 96) && 96 <= main__x) && main__y <= 96)) || (((82 <= main__y && 82 <= main__x) && main__y <= 82) && main__x <= 82)) || (((main__x <= 76 && 76 <= main__x) && main__y <= 76) && 76 <= main__y)) || (((main__x <= 67 && 67 <= main__x) && 67 <= main__y) && main__y <= 67)) || (((main__x <= 75 && main__y <= 75) && 75 <= main__y) && 75 <= main__x)) || (((main__y <= 78 && 78 <= main__x) && main__x <= 78) && 78 <= main__y)) || (((main__y <= 68 && main__x <= 68) && 68 <= main__x) && 68 <= main__y)) || (((main__x <= 86 && main__y <= 86) && 86 <= main__x) && 86 <= main__y)) || (((99 <= main__y && main__y <= 99) && 99 <= main__x) && main__x <= 99)) || (((79 <= main__y && 79 <= main__x) && main__x <= 79) && main__y <= 79)) || (((90 <= main__x && 90 <= main__y) && main__y <= 90) && main__x <= 90)) || (((main__x <= 87 && main__y <= 87) && 87 <= main__y) && 87 <= main__x)) || (((71 <= main__x && main__y <= 71) && 71 <= main__y) && main__x <= 71)) || (((main__x <= 92 && main__y <= 92) && 92 <= main__x) && 92 <= main__y)) || (((73 <= main__y && 73 <= main__x) && main__x <= 73) && main__y <= 73)) || (((main__y <= 74 && 74 <= main__x) && main__x <= 74) && 74 <= main__y)) || (((main__y <= 80 && 80 <= main__x) && main__x <= 80) && 80 <= main__y)) || (((84 <= main__y && main__x <= 84) && 84 <= main__x) && main__y <= 84) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((50 <= main__y && 4 <= main__x) && main__x <= 4) && main__y <= 50 - InvariantResult [Line: 253]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 40) && main__y <= 50) && 40 <= main__x - InvariantResult [Line: 355]: Loop Invariant Derived loop invariant: ((57 <= main__y && 57 <= main__x) && main__x <= 57) && main__y <= 57 - InvariantResult [Line: 271]: Loop Invariant Derived loop invariant: ((main__x <= 43 && 50 <= main__y) && 43 <= main__x) && main__y <= 50 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 13) && main__y <= 50) && 13 <= main__x - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: ((28 <= main__x && 50 <= main__y) && main__x <= 28) && main__y <= 50 - InvariantResult [Line: 217]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 34) && 34 <= main__x) && main__y <= 50 - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: ((main__x <= 10 && 50 <= main__y) && 10 <= main__x) && main__y <= 50 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: ((50 <= main__y && 21 <= main__x) && main__x <= 21) && main__y <= 50 - InvariantResult [Line: 313]: Loop Invariant Derived loop invariant: ((50 <= main__y && 50 <= main__x) && main__x <= 50) && main__y <= 50 - InvariantResult [Line: 385]: Loop Invariant Derived loop invariant: ((main__x <= 62 && main__y <= 62) && 62 <= main__x) && 62 <= main__y - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 5) && 5 <= main__x) && main__y <= 50 - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: ((32 <= main__x && 50 <= main__y) && main__x <= 32) && main__y <= 50 - InvariantResult [Line: 391]: Loop Invariant Derived loop invariant: ((main__x <= 63 && 63 <= main__y) && main__y <= 63) && 63 <= main__x - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: ((9 <= main__x && main__x <= 9) && 50 <= main__y) && main__y <= 50 - InvariantResult [Line: 397]: Loop Invariant Derived loop invariant: ((64 <= main__x && main__x <= 64) && 64 <= main__y) && main__y <= 64 - InvariantResult [Line: 229]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 36) && 36 <= main__x) && main__y <= 50 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 15) && 15 <= main__x) && main__y <= 50 - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 29) && 29 <= main__x) && main__y <= 50 - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: ((12 <= main__x && main__x <= 12) && 50 <= main__y) && main__y <= 50 - InvariantResult [Line: 409]: Loop Invariant Derived loop invariant: ((main__x <= 66 && 66 <= main__x) && 66 <= main__y) && main__y <= 66 - InvariantResult [Line: 151]: Loop Invariant Derived loop invariant: ((23 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 23 - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: ((20 <= main__x && 50 <= main__y) && main__x <= 20) && main__y <= 50 - InvariantResult [Line: 259]: Loop Invariant Derived loop invariant: ((main__x <= 41 && 50 <= main__y) && 41 <= main__x) && main__y <= 50 - InvariantResult [Line: 163]: Loop Invariant Derived loop invariant: ((50 <= main__y && 25 <= main__x) && main__x <= 25) && main__y <= 50 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: ((50 <= main__y && 30 <= main__x) && main__x <= 30) && main__y <= 50 - InvariantResult [Line: 169]: Loop Invariant Derived loop invariant: ((main__x <= 26 && 50 <= main__y) && 26 <= main__x) && main__y <= 50 - InvariantResult [Line: 403]: Loop Invariant Derived loop invariant: ((65 <= main__x && main__x <= 65) && main__y <= 65) && 65 <= main__y - InvariantResult [Line: 265]: Loop Invariant Derived loop invariant: ((50 <= main__y && 42 <= main__x) && main__x <= 42) && main__y <= 50 - InvariantResult [Line: 325]: Loop Invariant Derived loop invariant: ((main__y <= 52 && 52 <= main__y) && 52 <= main__x) && main__x <= 52 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((main__x <= 19 && 19 <= main__x) && 50 <= main__y) && main__y <= 50 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 379]: Loop Invariant Derived loop invariant: ((61 <= main__x && 61 <= main__y) && main__x <= 61) && main__y <= 61 - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 33) && 33 <= main__x) && main__y <= 50 - InvariantResult [Line: 289]: Loop Invariant Derived loop invariant: ((46 <= main__x && 50 <= main__y) && main__x <= 46) && main__y <= 50 - InvariantResult [Line: 295]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 47) && 47 <= main__x) && main__y <= 50 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: ((50 <= main__y && 24 <= main__x) && main__x <= 24) && main__y <= 50 - InvariantResult [Line: 349]: Loop Invariant Derived loop invariant: ((main__y <= 56 && 56 <= main__y) && 56 <= main__x) && main__x <= 56 - InvariantResult [Line: 361]: Loop Invariant Derived loop invariant: ((main__x <= 58 && 58 <= main__x) && main__y <= 58) && 58 <= main__y - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 7) && 7 <= main__x) && main__y <= 50 - InvariantResult [Line: 373]: Loop Invariant Derived loop invariant: ((60 <= main__x && main__y <= 60) && 60 <= main__y) && main__x <= 60 - InvariantResult [Line: 235]: Loop Invariant Derived loop invariant: ((37 <= main__x && 50 <= main__y) && main__x <= 37) && main__y <= 50 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((main__x <= 2 && 50 <= main__y) && main__y <= 50) && 2 <= main__x - InvariantResult [Line: 319]: Loop Invariant Derived loop invariant: ((51 <= main__y && main__y <= 51) && 51 <= main__x) && main__x <= 51 - InvariantResult [Line: 115]: Loop Invariant Derived loop invariant: ((50 <= main__y && 17 <= main__x) && main__x <= 17) && main__y <= 50 - InvariantResult [Line: 145]: Loop Invariant Derived loop invariant: ((50 <= main__y && 22 <= main__x) && main__x <= 22) && main__y <= 50 - InvariantResult [Line: 343]: Loop Invariant Derived loop invariant: ((main__y <= 55 && main__x <= 55) && 55 <= main__y) && 55 <= main__x - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((main__x <= 6 && 50 <= main__y) && 6 <= main__x) && main__y <= 50 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 3) && 3 <= main__x) && main__y <= 50 - InvariantResult [Line: 301]: Loop Invariant Derived loop invariant: ((50 <= main__y && 48 <= main__x) && main__x <= 48) && main__y <= 50 - InvariantResult [Line: 331]: Loop Invariant Derived loop invariant: ((53 <= main__x && main__y <= 53) && 53 <= main__y) && main__x <= 53 - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: ((50 <= main__y && 14 <= main__x) && main__x <= 14) && main__y <= 50 - InvariantResult [Line: 277]: Loop Invariant Derived loop invariant: ((main__x <= 44 && 50 <= main__y) && 44 <= main__x) && main__y <= 50 - InvariantResult [Line: 367]: Loop Invariant Derived loop invariant: ((main__y <= 59 && main__x <= 59) && 59 <= main__x) && 59 <= main__y - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: ((11 <= main__x && 50 <= main__y) && main__x <= 11) && main__y <= 50 - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 45) && 45 <= main__x) && main__y <= 50 - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 18) && main__y <= 50) && 18 <= main__x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((main__x <= 1 && 1 <= main__x) && 50 <= main__y) && main__y <= 50 - InvariantResult [Line: 307]: Loop Invariant Derived loop invariant: ((49 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 49 - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: ((27 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 27 RESULT: Ultimate proved your program to be correct! [2021-08-26 03:46:58,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...