./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 8d00aa97852983ba2c3c70494e438a7fe0e178a1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 14:21:20,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 14:21:20,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 14:21:20,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 14:21:20,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 14:21:20,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 14:21:20,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 14:21:20,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 14:21:20,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 14:21:20,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 14:21:20,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 14:21:20,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 14:21:20,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 14:21:20,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 14:21:20,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 14:21:20,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 14:21:20,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 14:21:20,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 14:21:20,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 14:21:20,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 14:21:20,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 14:21:20,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 14:21:20,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 14:21:20,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 14:21:20,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-08 14:21:20,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-08 14:21:20,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-08 14:21:20,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-08 14:21:20,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-08 14:21:20,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-08 14:21:20,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 14:21:20,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 14:21:20,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 14:21:20,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 14:21:20,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 14:21:20,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 14:21:20,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 14:21:20,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 14:21:20,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 14:21:20,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 14:21:20,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 14:21:20,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-08 14:21:20,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 14:21:20,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 14:21:20,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 14:21:20,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 14:21:20,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 14:21:20,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 14:21:20,202 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 14:21:20,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 14:21:20,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 14:21:20,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 14:21:20,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 14:21:20,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 14:21:20,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 14:21:20,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 14:21:20,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 14:21:20,204 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 14:21:20,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 14:21:20,204 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 14:21:20,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 14:21:20,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 14:21:20,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 14:21:20,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 14:21:20,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:21:20,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 14:21:20,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 14:21:20,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 14:21:20,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 14:21:20,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 14:21:20,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 14:21:20,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 14:21:20,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d00aa97852983ba2c3c70494e438a7fe0e178a1 [2021-10-08 14:21:20,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 14:21:20,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 14:21:20,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 14:21:20,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 14:21:20,628 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 14:21:20,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2021-10-08 14:21:20,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b6e3f8e2/5e9d7f0cc5e2448c8638de5a515c8c00/FLAGb1dc80d1b [2021-10-08 14:21:21,339 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 14:21:21,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2021-10-08 14:21:21,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b6e3f8e2/5e9d7f0cc5e2448c8638de5a515c8c00/FLAGb1dc80d1b [2021-10-08 14:21:21,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b6e3f8e2/5e9d7f0cc5e2448c8638de5a515c8c00 [2021-10-08 14:21:21,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 14:21:21,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 14:21:21,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 14:21:21,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 14:21:21,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 14:21:21,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:21:21" (1/1) ... [2021-10-08 14:21:21,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba13729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:21, skipping insertion in model container [2021-10-08 14:21:21,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:21:21" (1/1) ... [2021-10-08 14:21:21,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 14:21:21,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 14:21:21,910 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[4150,4163] [2021-10-08 14:21:21,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:21:21,954 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 14:21:21,998 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[4150,4163] [2021-10-08 14:21:22,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:21:22,022 INFO L208 MainTranslator]: Completed translation [2021-10-08 14:21:22,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22 WrapperNode [2021-10-08 14:21:22,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 14:21:22,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 14:21:22,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 14:21:22,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 14:21:22,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 14:21:22,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 14:21:22,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 14:21:22,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 14:21:22,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 14:21:22,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 14:21:22,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 14:21:22,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 14:21:22,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (1/1) ... [2021-10-08 14:21:22,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:21:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:21:22,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 14:21:22,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 14:21:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 14:21:22,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 14:21:22,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 14:21:22,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 14:21:22,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 14:21:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 14:21:22,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 14:21:22,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 14:21:22,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 14:21:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 14:21:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 14:21:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 14:21:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 14:21:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 14:21:22,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 14:21:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 14:21:22,259 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 14:21:23,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 14:21:23,382 INFO L299 CfgBuilder]: Removed 56 assume(true) statements. [2021-10-08 14:21:23,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:21:23 BoogieIcfgContainer [2021-10-08 14:21:23,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 14:21:23,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 14:21:23,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 14:21:23,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 14:21:23,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 02:21:21" (1/3) ... [2021-10-08 14:21:23,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e3815d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:21:23, skipping insertion in model container [2021-10-08 14:21:23,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:22" (2/3) ... [2021-10-08 14:21:23,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e3815d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:21:23, skipping insertion in model container [2021-10-08 14:21:23,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:21:23" (3/3) ... [2021-10-08 14:21:23,393 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2021-10-08 14:21:23,399 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 14:21:23,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 14:21:23,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-08 14:21:23,400 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 14:21:23,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,469 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,469 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,474 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,482 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,483 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,483 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:23,493 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 14:21:23,544 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 14:21:23,551 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 [2021-10-08 14:21:23,552 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-08 14:21:23,575 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 14:21:23,587 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 341 transitions, 706 flow [2021-10-08 14:21:23,590 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 341 transitions, 706 flow [2021-10-08 14:21:23,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 322 places, 341 transitions, 706 flow [2021-10-08 14:21:23,789 INFO L129 PetriNetUnfolder]: 29/338 cut-off events. [2021-10-08 14:21:23,789 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 14:21:23,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 338 events. 29/338 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 128 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 310. Up to 2 conditions per place. [2021-10-08 14:21:23,801 INFO L116 LiptonReduction]: Number of co-enabled transitions 270 [2021-10-08 14:21:43,741 INFO L131 LiptonReduction]: Checked pairs total: 591 [2021-10-08 14:21:43,741 INFO L133 LiptonReduction]: Total number of compositions: 382 [2021-10-08 14:21:43,753 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 88 flow [2021-10-08 14:21:43,771 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 50 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 states have internal predecessors, (92), 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) [2021-10-08 14:21:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 states have internal predecessors, (92), 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) [2021-10-08 14:21:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 14:21:43,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:43,783 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] [2021-10-08 14:21:43,784 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:43,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1560697046, now seen corresponding path program 1 times [2021-10-08 14:21:43,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:43,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090501940] [2021-10-08 14:21:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:43,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:21:44,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:44,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090501940] [2021-10-08 14:21:44,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090501940] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:44,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:44,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 14:21:44,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510480928] [2021-10-08 14:21:44,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 14:21:44,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:44,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 14:21:44,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 14:21:44,250 INFO L87 Difference]: Start difference. First operand has 50 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 49 states have internal predecessors, (92), 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 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-10-08 14:21:44,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:44,290 INFO L93 Difference]: Finished difference Result 51 states and 93 transitions. [2021-10-08 14:21:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 14:21:44,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-10-08 14:21:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:44,303 INFO L225 Difference]: With dead ends: 51 [2021-10-08 14:21:44,304 INFO L226 Difference]: Without dead ends: 51 [2021-10-08 14:21:44,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 14:21:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-08 14:21:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-08 14:21:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 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) [2021-10-08 14:21:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 93 transitions. [2021-10-08 14:21:44,341 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 93 transitions. Word has length 22 [2021-10-08 14:21:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:44,341 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 93 transitions. [2021-10-08 14:21:44,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-10-08 14:21:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 93 transitions. [2021-10-08 14:21:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 14:21:44,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:44,344 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] [2021-10-08 14:21:44,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 14:21:44,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:44,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2037376634, now seen corresponding path program 1 times [2021-10-08 14:21:44,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:44,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706971336] [2021-10-08 14:21:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:44,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 14:21:44,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:44,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706971336] [2021-10-08 14:21:44,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706971336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:44,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:44,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:21:44,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306240867] [2021-10-08 14:21:44,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:44,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:44,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:44,495 INFO L87 Difference]: Start difference. First operand 51 states and 93 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-10-08 14:21:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:44,548 INFO L93 Difference]: Finished difference Result 52 states and 94 transitions. [2021-10-08 14:21:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-08 14:21:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:44,556 INFO L225 Difference]: With dead ends: 52 [2021-10-08 14:21:44,557 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 14:21:44,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:21:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 14:21:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 14:21:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.8431372549019607) internal successors, (94), 51 states have internal predecessors, (94), 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) [2021-10-08 14:21:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 94 transitions. [2021-10-08 14:21:44,573 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 94 transitions. Word has length 23 [2021-10-08 14:21:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:44,573 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 94 transitions. [2021-10-08 14:21:44,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-10-08 14:21:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 94 transitions. [2021-10-08 14:21:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 14:21:44,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:44,576 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] [2021-10-08 14:21:44,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 14:21:44,577 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:44,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1641371374, now seen corresponding path program 1 times [2021-10-08 14:21:44,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:44,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981067153] [2021-10-08 14:21:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:44,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 14:21:44,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:44,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981067153] [2021-10-08 14:21:44,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981067153] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:44,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:44,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:21:44,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138742409] [2021-10-08 14:21:44,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:44,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:44,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:44,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:44,717 INFO L87 Difference]: Start difference. First operand 52 states and 94 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-08 14:21:44,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:44,766 INFO L93 Difference]: Finished difference Result 53 states and 95 transitions. [2021-10-08 14:21:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-10-08 14:21:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:44,769 INFO L225 Difference]: With dead ends: 53 [2021-10-08 14:21:44,771 INFO L226 Difference]: Without dead ends: 53 [2021-10-08 14:21:44,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:21:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-08 14:21:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-08 14:21:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 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) [2021-10-08 14:21:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 95 transitions. [2021-10-08 14:21:44,785 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 95 transitions. Word has length 24 [2021-10-08 14:21:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:44,786 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 95 transitions. [2021-10-08 14:21:44,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-08 14:21:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 95 transitions. [2021-10-08 14:21:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 14:21:44,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:44,788 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] [2021-10-08 14:21:44,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 14:21:44,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash -292474550, now seen corresponding path program 1 times [2021-10-08 14:21:44,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:44,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023316857] [2021-10-08 14:21:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:44,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 14:21:44,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:44,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023316857] [2021-10-08 14:21:44,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023316857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:44,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:44,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:21:44,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086806952] [2021-10-08 14:21:44,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:44,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:44,945 INFO L87 Difference]: Start difference. First operand 53 states and 95 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-08 14:21:44,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:44,995 INFO L93 Difference]: Finished difference Result 54 states and 96 transitions. [2021-10-08 14:21:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:44,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-10-08 14:21:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:44,997 INFO L225 Difference]: With dead ends: 54 [2021-10-08 14:21:44,998 INFO L226 Difference]: Without dead ends: 54 [2021-10-08 14:21:44,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:21:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-08 14:21:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-08 14:21:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 53 states have internal predecessors, (96), 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) [2021-10-08 14:21:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 96 transitions. [2021-10-08 14:21:45,005 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 96 transitions. Word has length 25 [2021-10-08 14:21:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:45,005 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 96 transitions. [2021-10-08 14:21:45,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-08 14:21:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 96 transitions. [2021-10-08 14:21:45,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 14:21:45,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:45,007 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] [2021-10-08 14:21:45,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-08 14:21:45,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:45,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1604542894, now seen corresponding path program 1 times [2021-10-08 14:21:45,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:45,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807914067] [2021-10-08 14:21:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:45,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 14:21:45,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:45,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807914067] [2021-10-08 14:21:45,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807914067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:45,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:45,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:21:45,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372401996] [2021-10-08 14:21:45,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:45,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:45,089 INFO L87 Difference]: Start difference. First operand 54 states and 96 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-10-08 14:21:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:45,120 INFO L93 Difference]: Finished difference Result 55 states and 97 transitions. [2021-10-08 14:21:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:45,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-10-08 14:21:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:45,124 INFO L225 Difference]: With dead ends: 55 [2021-10-08 14:21:45,124 INFO L226 Difference]: Without dead ends: 55 [2021-10-08 14:21:45,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:21:45,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-08 14:21:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-08 14:21:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.7962962962962963) internal successors, (97), 54 states have internal predecessors, (97), 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) [2021-10-08 14:21:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 97 transitions. [2021-10-08 14:21:45,132 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 97 transitions. Word has length 26 [2021-10-08 14:21:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:45,133 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 97 transitions. [2021-10-08 14:21:45,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-10-08 14:21:45,133 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 97 transitions. [2021-10-08 14:21:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 14:21:45,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:45,134 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] [2021-10-08 14:21:45,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 14:21:45,135 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:45,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1560240769, now seen corresponding path program 1 times [2021-10-08 14:21:45,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:45,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880862795] [2021-10-08 14:21:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:45,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 14:21:45,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:45,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880862795] [2021-10-08 14:21:45,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880862795] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:45,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:45,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:21:45,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204256430] [2021-10-08 14:21:45,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:45,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:45,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:45,231 INFO L87 Difference]: Start difference. First operand 55 states and 97 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-10-08 14:21:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:45,262 INFO L93 Difference]: Finished difference Result 56 states and 98 transitions. [2021-10-08 14:21:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:45,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2021-10-08 14:21:45,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:45,264 INFO L225 Difference]: With dead ends: 56 [2021-10-08 14:21:45,264 INFO L226 Difference]: Without dead ends: 56 [2021-10-08 14:21:45,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-08 14:21:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-08 14:21:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.7818181818181817) internal successors, (98), 55 states have internal predecessors, (98), 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) [2021-10-08 14:21:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 98 transitions. [2021-10-08 14:21:45,270 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 98 transitions. Word has length 27 [2021-10-08 14:21:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:45,270 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 98 transitions. [2021-10-08 14:21:45,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-10-08 14:21:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 98 transitions. [2021-10-08 14:21:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:21:45,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:45,272 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] [2021-10-08 14:21:45,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 14:21:45,272 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2115912941, now seen corresponding path program 1 times [2021-10-08 14:21:45,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:45,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257991087] [2021-10-08 14:21:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:45,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:21:47,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:47,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257991087] [2021-10-08 14:21:47,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257991087] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:47,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:47,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-08 14:21:47,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102599755] [2021-10-08 14:21:47,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:21:47,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:47,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:21:47,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:21:47,226 INFO L87 Difference]: Start difference. First operand 56 states and 98 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-10-08 14:21:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:47,769 INFO L93 Difference]: Finished difference Result 75 states and 118 transitions. [2021-10-08 14:21:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 14:21:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 28 [2021-10-08 14:21:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:47,771 INFO L225 Difference]: With dead ends: 75 [2021-10-08 14:21:47,771 INFO L226 Difference]: Without dead ends: 64 [2021-10-08 14:21:47,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 499.3ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:21:47,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-08 14:21:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-10-08 14:21:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.709090909090909) internal successors, (94), 55 states have internal predecessors, (94), 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) [2021-10-08 14:21:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2021-10-08 14:21:47,777 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 94 transitions. Word has length 28 [2021-10-08 14:21:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:47,777 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 94 transitions. [2021-10-08 14:21:47,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-10-08 14:21:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 94 transitions. [2021-10-08 14:21:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:21:47,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:47,779 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] [2021-10-08 14:21:47,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-08 14:21:47,780 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:47,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:47,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1757890997, now seen corresponding path program 2 times [2021-10-08 14:21:47,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:47,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958291207] [2021-10-08 14:21:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:47,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:21:49,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:49,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958291207] [2021-10-08 14:21:49,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958291207] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:49,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:49,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-08 14:21:49,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808224465] [2021-10-08 14:21:49,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:21:49,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:21:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:21:49,139 INFO L87 Difference]: Start difference. First operand 56 states and 94 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-10-08 14:21:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:49,498 INFO L93 Difference]: Finished difference Result 79 states and 120 transitions. [2021-10-08 14:21:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 14:21:49,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 28 [2021-10-08 14:21:49,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:49,499 INFO L225 Difference]: With dead ends: 79 [2021-10-08 14:21:49,500 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 14:21:49,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 267.6ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:21:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 14:21:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2021-10-08 14:21:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.62) internal successors, (81), 50 states have internal predecessors, (81), 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) [2021-10-08 14:21:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 81 transitions. [2021-10-08 14:21:49,511 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 81 transitions. Word has length 28 [2021-10-08 14:21:49,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:49,512 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 81 transitions. [2021-10-08 14:21:49,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-10-08 14:21:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 81 transitions. [2021-10-08 14:21:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:21:49,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:49,514 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] [2021-10-08 14:21:49,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 14:21:49,515 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:49,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1114889667, now seen corresponding path program 3 times [2021-10-08 14:21:49,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:49,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395587103] [2021-10-08 14:21:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:49,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:21:50,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:50,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395587103] [2021-10-08 14:21:50,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395587103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:50,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:50,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:21:50,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951112348] [2021-10-08 14:21:50,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:21:50,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:50,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:21:50,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:21:50,462 INFO L87 Difference]: Start difference. First operand 51 states and 81 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-10-08 14:21:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:50,904 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2021-10-08 14:21:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 14:21:50,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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 28 [2021-10-08 14:21:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:50,907 INFO L225 Difference]: With dead ends: 89 [2021-10-08 14:21:50,907 INFO L226 Difference]: Without dead ends: 71 [2021-10-08 14:21:50,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 387.7ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-08 14:21:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-08 14:21:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2021-10-08 14:21:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 47 states have internal predecessors, (75), 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) [2021-10-08 14:21:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 75 transitions. [2021-10-08 14:21:50,917 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 75 transitions. Word has length 28 [2021-10-08 14:21:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:50,918 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 75 transitions. [2021-10-08 14:21:50,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-10-08 14:21:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 75 transitions. [2021-10-08 14:21:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:21:50,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:50,920 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] [2021-10-08 14:21:50,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 14:21:50,921 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:21:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:50,922 INFO L82 PathProgramCache]: Analyzing trace with hash 792860173, now seen corresponding path program 4 times [2021-10-08 14:21:50,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:50,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318788062] [2021-10-08 14:21:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:50,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 14:21:51,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:51,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318788062] [2021-10-08 14:21:51,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318788062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 14:21:51,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573398033] [2021-10-08 14:21:51,889 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 14:21:51,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:21:51,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:21:51,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 14:21:51,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 14:21:52,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 14:21:52,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 14:21:52,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 14:21:52,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 14:22:13,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 14:22:13,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 542 treesize of output 506 [2021-10-08 14:22:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:22:19,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573398033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:22:19,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 14:22:19,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2021-10-08 14:22:19,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922159913] [2021-10-08 14:22:19,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 14:22:19,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:22:19,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 14:22:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:22:19,623 INFO L87 Difference]: Start difference. First operand 48 states and 75 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-10-08 14:22:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:22:20,000 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2021-10-08 14:22:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 14:22:20,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2021-10-08 14:22:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:22:20,006 INFO L225 Difference]: With dead ends: 63 [2021-10-08 14:22:20,006 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 14:22:20,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 481.9ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:22:20,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 14:22:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-08 14:22:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 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) [2021-10-08 14:22:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 66 transitions. [2021-10-08 14:22:20,010 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 66 transitions. Word has length 28 [2021-10-08 14:22:20,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:22:20,010 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 66 transitions. [2021-10-08 14:22:20,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-10-08 14:22:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 66 transitions. [2021-10-08 14:22:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:22:20,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:22:20,012 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] [2021-10-08 14:22:20,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-08 14:22:20,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:22:20,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:22:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:22:20,222 INFO L82 PathProgramCache]: Analyzing trace with hash -492096729, now seen corresponding path program 5 times [2021-10-08 14:22:20,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:22:20,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323063962] [2021-10-08 14:22:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:22:20,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:22:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:22:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:22:20,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:22:20,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323063962] [2021-10-08 14:22:20,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323063962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:22:20,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:22:20,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 14:22:20,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720778916] [2021-10-08 14:22:20,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 14:22:20,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:22:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 14:22:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:22:20,714 INFO L87 Difference]: Start difference. First operand 44 states and 66 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-10-08 14:22:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:22:20,956 INFO L93 Difference]: Finished difference Result 53 states and 75 transitions. [2021-10-08 14:22:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 14:22:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2021-10-08 14:22:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:22:20,958 INFO L225 Difference]: With dead ends: 53 [2021-10-08 14:22:20,958 INFO L226 Difference]: Without dead ends: 42 [2021-10-08 14:22:20,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 14:22:20,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-08 14:22:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-08 14:22:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 41 states have internal predecessors, (61), 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) [2021-10-08 14:22:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions. [2021-10-08 14:22:20,961 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 61 transitions. Word has length 28 [2021-10-08 14:22:20,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:22:20,961 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 61 transitions. [2021-10-08 14:22:20,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-10-08 14:22:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 61 transitions. [2021-10-08 14:22:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:22:20,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:22:20,962 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] [2021-10-08 14:22:20,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 14:22:20,963 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:22:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:22:20,963 INFO L82 PathProgramCache]: Analyzing trace with hash 501902069, now seen corresponding path program 6 times [2021-10-08 14:22:20,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:22:20,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122113847] [2021-10-08 14:22:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:22:20,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:22:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:22:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:22:22,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:22:22,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122113847] [2021-10-08 14:22:22,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122113847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:22:22,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:22:22,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 14:22:22,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84407357] [2021-10-08 14:22:22,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 14:22:22,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:22:22,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 14:22:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 14:22:22,176 INFO L87 Difference]: Start difference. First operand 42 states and 61 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-10-08 14:22:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:22:22,574 INFO L93 Difference]: Finished difference Result 69 states and 96 transitions. [2021-10-08 14:22:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 14:22:22,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2021-10-08 14:22:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:22:22,575 INFO L225 Difference]: With dead ends: 69 [2021-10-08 14:22:22,575 INFO L226 Difference]: Without dead ends: 55 [2021-10-08 14:22:22,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 378.0ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-08 14:22:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-08 14:22:22,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2021-10-08 14:22:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 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) [2021-10-08 14:22:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2021-10-08 14:22:22,578 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 28 [2021-10-08 14:22:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:22:22,579 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2021-10-08 14:22:22,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-10-08 14:22:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2021-10-08 14:22:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:22:22,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:22:22,580 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] [2021-10-08 14:22:22,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-08 14:22:22,581 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:22:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:22:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash -427524049, now seen corresponding path program 7 times [2021-10-08 14:22:22,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:22:22,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443035639] [2021-10-08 14:22:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:22:22,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:22:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:22:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:22:24,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:22:24,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443035639] [2021-10-08 14:22:24,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443035639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:22:24,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:22:24,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 14:22:24,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576892061] [2021-10-08 14:22:24,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 14:22:24,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:22:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 14:22:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:22:24,606 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-10-08 14:22:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:22:24,988 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2021-10-08 14:22:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 14:22:24,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2021-10-08 14:22:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:22:24,990 INFO L225 Difference]: With dead ends: 54 [2021-10-08 14:22:24,990 INFO L226 Difference]: Without dead ends: 39 [2021-10-08 14:22:24,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 321.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 14:22:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-08 14:22:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-08 14:22:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 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) [2021-10-08 14:22:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-08 14:22:24,999 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 28 [2021-10-08 14:22:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:22:25,000 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-08 14:22:25,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-10-08 14:22:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-08 14:22:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:22:25,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:22:25,001 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] [2021-10-08 14:22:25,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-08 14:22:25,002 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:22:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:22:25,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2066380967, now seen corresponding path program 8 times [2021-10-08 14:22:25,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:22:25,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591050497] [2021-10-08 14:22:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:22:25,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:22:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:22:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 14:22:28,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:22:28,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591050497] [2021-10-08 14:22:28,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591050497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 14:22:28,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886712504] [2021-10-08 14:22:28,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 14:22:28,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:22:28,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:22:28,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 14:22:28,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 14:22:28,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 14:22:28,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 14:22:28,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 14:22:28,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 14:22:29,503 INFO L354 Elim1Store]: treesize reduction 156, result has 22.8 percent of original size [2021-10-08 14:22:29,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 107 [2021-10-08 14:22:29,845 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 14:22:29,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 103 [2021-10-08 14:22:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:22:30,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886712504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:22:30,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 14:22:30,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 22 [2021-10-08 14:22:30,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852327612] [2021-10-08 14:22:30,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:22:30,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:22:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:22:30,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:22:30,557 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-08 14:22:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:22:33,390 INFO L93 Difference]: Finished difference Result 53 states and 73 transitions. [2021-10-08 14:22:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 14:22:33,391 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 28 [2021-10-08 14:22:33,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:22:33,391 INFO L225 Difference]: With dead ends: 53 [2021-10-08 14:22:33,392 INFO L226 Difference]: Without dead ends: 38 [2021-10-08 14:22:33,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1283.4ms TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2021-10-08 14:22:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-08 14:22:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-08 14:22:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 37 states have internal predecessors, (53), 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) [2021-10-08 14:22:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2021-10-08 14:22:33,395 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 28 [2021-10-08 14:22:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:22:33,395 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2021-10-08 14:22:33,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-08 14:22:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2021-10-08 14:22:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:22:33,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:22:33,396 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] [2021-10-08 14:22:33,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 14:22:33,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-08 14:22:33,604 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:22:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:22:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1261981743, now seen corresponding path program 9 times [2021-10-08 14:22:33,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:22:33,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530391292] [2021-10-08 14:22:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:22:33,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:22:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:22:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:22:34,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:22:34,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530391292] [2021-10-08 14:22:34,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530391292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:22:34,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:22:34,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:22:34,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014096051] [2021-10-08 14:22:34,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:22:34,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:22:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:22:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:22:34,460 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-10-08 14:22:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:22:34,794 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2021-10-08 14:22:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 14:22:34,795 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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 28 [2021-10-08 14:22:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:22:34,796 INFO L225 Difference]: With dead ends: 45 [2021-10-08 14:22:34,796 INFO L226 Difference]: Without dead ends: 31 [2021-10-08 14:22:34,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 339.3ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-10-08 14:22:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-08 14:22:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-08 14:22:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 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) [2021-10-08 14:22:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-10-08 14:22:34,803 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 28 [2021-10-08 14:22:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:22:34,803 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-10-08 14:22:34,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-10-08 14:22:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-10-08 14:22:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 14:22:34,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:22:34,805 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] [2021-10-08 14:22:34,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 14:22:34,806 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-08 14:22:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:22:34,807 INFO L82 PathProgramCache]: Analyzing trace with hash -334276279, now seen corresponding path program 10 times [2021-10-08 14:22:34,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:22:34,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817659392] [2021-10-08 14:22:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:22:34,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:22:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:22:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 14:22:36,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:22:36,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817659392] [2021-10-08 14:22:36,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817659392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:22:36,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:22:36,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:22:36,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803181974] [2021-10-08 14:22:36,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:22:36,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:22:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:22:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:22:36,738 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-08 14:22:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:22:37,127 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2021-10-08 14:22:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 14:22:37,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 28 [2021-10-08 14:22:37,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:22:37,142 INFO L225 Difference]: With dead ends: 30 [2021-10-08 14:22:37,142 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 14:22:37,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 506.2ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-08 14:22:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 14:22:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 14:22:37,143 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) [2021-10-08 14:22:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 14:22:37,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-08 14:22:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:22:37,144 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 14:22:37,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-08 14:22:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 14:22:37,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 14:22:37,148 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-08 14:22:37,148 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 14:22:37,148 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 14:22:37,149 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 14:22:37,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-08 14:22:37,153 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 14:22:37,153 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 14:22:37,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 02:22:37 BasicIcfg [2021-10-08 14:22:37,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 14:22:37,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 14:22:37,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 14:22:37,164 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 14:22:37,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:21:23" (3/4) ... [2021-10-08 14:22:37,173 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 14:22:37,185 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 14:22:37,186 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 14:22:37,186 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-08 14:22:37,209 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2021-10-08 14:22:37,210 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 14:22:37,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:22:37,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:22:37,318 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-08 14:22:37,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 14:22:37,319 INFO L168 Benchmark]: Toolchain (without parser) took 75673.05 ms. Allocated memory was 48.2 MB in the beginning and 465.6 MB in the end (delta: 417.3 MB). Free memory was 25.3 MB in the beginning and 402.6 MB in the end (delta: -377.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2021-10-08 14:22:37,320 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 39.8 MB. Free memory is still 21.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-08 14:22:37,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.85 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-08 14:22:37,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.22 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 32.3 MB in the end (delta: -8.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-08 14:22:37,322 INFO L168 Benchmark]: Boogie Preprocessor took 47.97 ms. Allocated memory is still 48.2 MB. Free memory was 32.3 MB in the beginning and 30.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-08 14:22:37,322 INFO L168 Benchmark]: RCFGBuilder took 1244.73 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 29.9 MB in the beginning and 26.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-08 14:22:37,323 INFO L168 Benchmark]: TraceAbstraction took 73769.11 ms. Allocated memory was 58.7 MB in the beginning and 465.6 MB in the end (delta: 406.8 MB). Free memory was 25.8 MB in the beginning and 409.9 MB in the end (delta: -384.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-08 14:22:37,323 INFO L168 Benchmark]: Witness Printer took 154.24 ms. Allocated memory is still 465.6 MB. Free memory was 409.9 MB in the beginning and 402.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-08 14:22:37,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 39.8 MB. Free memory is still 21.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 367.85 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.22 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 32.3 MB in the end (delta: -8.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.97 ms. Allocated memory is still 48.2 MB. Free memory was 32.3 MB in the beginning and 30.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1244.73 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 29.9 MB in the beginning and 26.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 73769.11 ms. Allocated memory was 58.7 MB in the beginning and 465.6 MB in the end (delta: 406.8 MB). Free memory was 25.8 MB in the beginning and 409.9 MB in the end (delta: -384.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * Witness Printer took 154.24 ms. Allocated memory is still 465.6 MB. Free memory was 409.9 MB in the beginning and 402.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20151.2ms, 322 PlacesBefore, 36 PlacesAfterwards, 341 TransitionsBefore, 32 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 8 FixpointIterations, 278 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 63 TrivialYvCompositions, 0 ConcurrentYvCompositions, 23 ChoiceCompositions, 382 TotalNumberOfCompositions, 591 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 503, positive: 453, positive conditional: 0, positive unconditional: 453, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 232, positive: 218, positive conditional: 0, positive unconditional: 218, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 232, positive: 218, positive conditional: 0, positive unconditional: 218, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 197, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 197, negative conditional: 0, negative unconditional: 197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 503, positive: 235, positive conditional: 0, positive unconditional: 235, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 232, unknown conditional: 0, unknown unconditional: 232] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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: 114]: 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 with 1 thread instances CFG has 7 procedures, 328 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 73610.9ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 28.0ms, AutomataDifference: 6682.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20219.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 349 SDtfs, 867 SDslu, 435 SDs, 0 SdLazy, 1015 SolverSat, 101 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3637.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 4730.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=6, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 114.5ms AutomataMinimizationTime, 16 MinimizatonAttempts, 58 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 147.8ms SsaConstructionTime, 3695.3ms SatisfiabilityAnalysisTime, 41636.4ms InterpolantComputationTime, 483 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 465 ConstructedInterpolants, 5 QuantifiedInterpolants, 12642 SizeOfPredicates, 44 NumberOfNonLiveVariables, 692 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 82/87 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 RESULT: Ultimate proved your program to be correct! [2021-10-08 14:22:37,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...