./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more/buffer-series.wvr.c --full-output -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf --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/popl20-more/buffer-series.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 3dc053c284fdf37018599e5dbbde68f9fbdd25a5 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-05 23:03:15,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-05 23:03:15,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-05 23:03:16,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-05 23:03:16,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-05 23:03:16,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-05 23:03:16,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-05 23:03:16,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-05 23:03:16,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-05 23:03:16,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-05 23:03:16,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-05 23:03:16,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-05 23:03:16,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-05 23:03:16,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-05 23:03:16,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-05 23:03:16,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-05 23:03:16,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-05 23:03:16,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-05 23:03:16,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-05 23:03:16,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-05 23:03:16,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-05 23:03:16,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-05 23:03:16,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-05 23:03:16,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-05 23:03:16,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-05 23:03:16,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-05 23:03:16,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-05 23:03:16,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-05 23:03:16,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-05 23:03:16,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-05 23:03:16,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-05 23:03:16,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-05 23:03:16,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-05 23:03:16,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-05 23:03:16,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-05 23:03:16,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-05 23:03:16,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-05 23:03:16,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-05 23:03:16,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-05 23:03:16,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-05 23:03:16,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-05 23:03:16,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-05 23:03:16,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-05 23:03:16,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-05 23:03:16,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-05 23:03:16,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-05 23:03:16,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-05 23:03:16,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-05 23:03:16,132 INFO L138 SettingsManager]: * Use SBE=true [2021-10-05 23:03:16,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-05 23:03:16,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-05 23:03:16,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-05 23:03:16,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-05 23:03:16,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-05 23:03:16,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-05 23:03:16,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-05 23:03:16,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-05 23:03:16,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-05 23:03:16,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-05 23:03:16,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-05 23:03:16,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-05 23:03:16,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-05 23:03:16,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-05 23:03:16,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-05 23:03:16,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 23:03:16,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-05 23:03:16,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-05 23:03:16,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-05 23:03:16,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-05 23:03:16,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-05 23:03:16,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-05 23:03:16,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-05 23:03:16,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dc053c284fdf37018599e5dbbde68f9fbdd25a5 [2021-10-05 23:03:16,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-05 23:03:16,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-05 23:03:16,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-05 23:03:16,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-05 23:03:16,627 INFO L275 PluginConnector]: CDTParser initialized [2021-10-05 23:03:16,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more/buffer-series.wvr.c [2021-10-05 23:03:16,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dda5945dc/32901563d5e84f6b8875ddfedcf9d10e/FLAG4110d0db4 [2021-10-05 23:03:17,453 INFO L306 CDTParser]: Found 1 translation units. [2021-10-05 23:03:17,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more/buffer-series.wvr.c [2021-10-05 23:03:17,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dda5945dc/32901563d5e84f6b8875ddfedcf9d10e/FLAG4110d0db4 [2021-10-05 23:03:17,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dda5945dc/32901563d5e84f6b8875ddfedcf9d10e [2021-10-05 23:03:17,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-05 23:03:17,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-05 23:03:17,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-05 23:03:17,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-05 23:03:17,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-05 23:03:17,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:03:17" (1/1) ... [2021-10-05 23:03:17,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c24c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:17, skipping insertion in model container [2021-10-05 23:03:17,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:03:17" (1/1) ... [2021-10-05 23:03:17,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-05 23:03:17,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-05 23:03:18,084 WARN L612 FunctionHandler]: implicit declaration of function assume [2021-10-05 23:03:18,104 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/popl20-more/buffer-series.wvr.c[3292,3305] [2021-10-05 23:03:18,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 23:03:18,128 INFO L203 MainTranslator]: Completed pre-run [2021-10-05 23:03:18,150 WARN L612 FunctionHandler]: implicit declaration of function assume [2021-10-05 23:03:18,162 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/popl20-more/buffer-series.wvr.c[3292,3305] [2021-10-05 23:03:18,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 23:03:18,189 INFO L208 MainTranslator]: Completed translation [2021-10-05 23:03:18,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18 WrapperNode [2021-10-05 23:03:18,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-05 23:03:18,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-05 23:03:18,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-05 23:03:18,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-05 23:03:18,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-05 23:03:18,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-05 23:03:18,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-05 23:03:18,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-05 23:03:18,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-05 23:03:18,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-05 23:03:18,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-05 23:03:18,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-05 23:03:18,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (1/1) ... [2021-10-05 23:03:18,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 23:03:18,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 23:03:18,350 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) [2021-10-05 23:03:18,368 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 [2021-10-05 23:03:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-05 23:03:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-05 23:03:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-05 23:03:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-05 23:03:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-05 23:03:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-05 23:03:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-05 23:03:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-05 23:03:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-05 23:03:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-05 23:03:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-05 23:03:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-05 23:03:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-05 23:03:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-05 23:03:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-05 23:03:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-05 23:03:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-05 23:03:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2021-10-05 23:03:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-05 23:03:18,428 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-05 23:03:19,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-05 23:03:19,341 INFO L299 CfgBuilder]: Removed 37 assume(true) statements. [2021-10-05 23:03:19,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:03:19 BoogieIcfgContainer [2021-10-05 23:03:19,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-05 23:03:19,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-05 23:03:19,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-05 23:03:19,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-05 23:03:19,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:03:17" (1/3) ... [2021-10-05 23:03:19,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b4ff05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:03:19, skipping insertion in model container [2021-10-05 23:03:19,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:18" (2/3) ... [2021-10-05 23:03:19,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b4ff05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:03:19, skipping insertion in model container [2021-10-05 23:03:19,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:03:19" (3/3) ... [2021-10-05 23:03:19,358 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-series.wvr.c [2021-10-05 23:03:19,370 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-05 23:03:19,371 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-05 23:03:19,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-05 23:03:19,371 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-05 23:03:19,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,440 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,440 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,440 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,442 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,443 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,443 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,444 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,446 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,448 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,449 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,449 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,450 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,451 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,451 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,451 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,452 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,452 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,452 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,452 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,453 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,453 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,453 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,453 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,461 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,462 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,462 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,462 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,463 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,465 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,466 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,466 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,466 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,467 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,467 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,467 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,467 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,469 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,470 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,470 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,470 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,471 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,471 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,480 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,480 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,480 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,480 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,481 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 23:03:19,496 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-05 23:03:19,566 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-05 23:03:19,574 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 [2021-10-05 23:03:19,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-05 23:03:19,594 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-05 23:03:19,606 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 208 transitions, 448 flow [2021-10-05 23:03:19,610 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 208 transitions, 448 flow [2021-10-05 23:03:19,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 208 transitions, 448 flow [2021-10-05 23:03:19,713 INFO L129 PetriNetUnfolder]: 19/204 cut-off events. [2021-10-05 23:03:19,713 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-05 23:03:19,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 204 events. 19/204 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2021-10-05 23:03:19,722 INFO L116 LiptonReduction]: Number of co-enabled transitions 1100 [2021-10-05 23:03:30,121 INFO L131 LiptonReduction]: Checked pairs total: 2807 [2021-10-05 23:03:30,121 INFO L133 LiptonReduction]: Total number of compositions: 194 [2021-10-05 23:03:30,131 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 40 transitions, 112 flow [2021-10-05 23:03:30,175 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 325 states, 324 states have (on average 4.021604938271605) internal successors, (1303), 324 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 324 states have (on average 4.021604938271605) internal successors, (1303), 324 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-05 23:03:30,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:30,202 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] [2021-10-05 23:03:30,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:30,209 INFO L82 PathProgramCache]: Analyzing trace with hash -594704884, now seen corresponding path program 1 times [2021-10-05 23:03:30,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:30,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751700787] [2021-10-05 23:03:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:30,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:03:30,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:30,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751700787] [2021-10-05 23:03:30,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751700787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 23:03:30,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 23:03:30,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-05 23:03:30,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584953149] [2021-10-05 23:03:30,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-05 23:03:30,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-05 23:03:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-05 23:03:30,800 INFO L87 Difference]: Start difference. First operand has 325 states, 324 states have (on average 4.021604938271605) internal successors, (1303), 324 states have internal predecessors, (1303), 0 states have call successors, (0), 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, 2 states have (on average 12.0) internal successors, (24), 2 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) [2021-10-05 23:03:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:30,895 INFO L93 Difference]: Finished difference Result 620 states and 2531 transitions. [2021-10-05 23:03:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-05 23:03:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 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 [2021-10-05 23:03:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:30,943 INFO L225 Difference]: With dead ends: 620 [2021-10-05 23:03:30,943 INFO L226 Difference]: Without dead ends: 591 [2021-10-05 23:03:30,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-05 23:03:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-10-05 23:03:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 441. [2021-10-05 23:03:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 4.054545454545455) internal successors, (1784), 440 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1784 transitions. [2021-10-05 23:03:31,096 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1784 transitions. Word has length 24 [2021-10-05 23:03:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:31,098 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 1784 transitions. [2021-10-05 23:03:31,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 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) [2021-10-05 23:03:31,099 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1784 transitions. [2021-10-05 23:03:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-05 23:03:31,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:31,111 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] [2021-10-05 23:03:31,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-05 23:03:31,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash -48814226, now seen corresponding path program 1 times [2021-10-05 23:03:31,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:31,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734628930] [2021-10-05 23:03:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:31,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:03:31,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:31,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734628930] [2021-10-05 23:03:31,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734628930] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 23:03:31,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 23:03:31,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 23:03:31,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271715970] [2021-10-05 23:03:31,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 23:03:31,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:31,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 23:03:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:31,260 INFO L87 Difference]: Start difference. First operand 441 states and 1784 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) [2021-10-05 23:03:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:31,319 INFO L93 Difference]: Finished difference Result 663 states and 2612 transitions. [2021-10-05 23:03:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 23:03:31,320 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 [2021-10-05 23:03:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:31,328 INFO L225 Difference]: With dead ends: 663 [2021-10-05 23:03:31,329 INFO L226 Difference]: Without dead ends: 613 [2021-10-05 23:03:31,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-10-05 23:03:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2021-10-05 23:03:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 4.019607843137255) internal successors, (2460), 612 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 2460 transitions. [2021-10-05 23:03:31,368 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 2460 transitions. Word has length 26 [2021-10-05 23:03:31,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:31,369 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 2460 transitions. [2021-10-05 23:03:31,369 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) [2021-10-05 23:03:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 2460 transitions. [2021-10-05 23:03:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-05 23:03:31,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:31,374 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] [2021-10-05 23:03:31,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-05 23:03:31,375 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash -597886002, now seen corresponding path program 1 times [2021-10-05 23:03:31,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:31,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277588959] [2021-10-05 23:03:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:31,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:03:31,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:31,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277588959] [2021-10-05 23:03:31,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277588959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:31,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844569933] [2021-10-05 23:03:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:31,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:03:31,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 23:03:31,450 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) [2021-10-05 23:03:31,481 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 [2021-10-05 23:03:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:31,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-05 23:03:31,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 23:03:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:03:31,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844569933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:31,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 23:03:31,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-05 23:03:31,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431918530] [2021-10-05 23:03:31,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 23:03:31,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 23:03:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:31,687 INFO L87 Difference]: Start difference. First operand 613 states and 2460 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) [2021-10-05 23:03:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:31,802 INFO L93 Difference]: Finished difference Result 1131 states and 4374 transitions. [2021-10-05 23:03:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 23:03:31,806 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 [2021-10-05 23:03:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:31,818 INFO L225 Difference]: With dead ends: 1131 [2021-10-05 23:03:31,819 INFO L226 Difference]: Without dead ends: 975 [2021-10-05 23:03:31,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-05 23:03:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-10-05 23:03:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 821. [2021-10-05 23:03:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 4.004878048780488) internal successors, (3284), 820 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 3284 transitions. [2021-10-05 23:03:31,877 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 3284 transitions. Word has length 26 [2021-10-05 23:03:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:31,877 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 3284 transitions. [2021-10-05 23:03:31,878 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) [2021-10-05 23:03:31,878 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 3284 transitions. [2021-10-05 23:03:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-05 23:03:31,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:31,884 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] [2021-10-05 23:03:31,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-05 23:03:32,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:03:32,099 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:32,101 INFO L82 PathProgramCache]: Analyzing trace with hash 839574795, now seen corresponding path program 1 times [2021-10-05 23:03:32,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:32,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012803280] [2021-10-05 23:03:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:32,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 23:03:32,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:32,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012803280] [2021-10-05 23:03:32,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012803280] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 23:03:32,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 23:03:32,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 23:03:32,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230314250] [2021-10-05 23:03:32,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 23:03:32,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 23:03:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:32,173 INFO L87 Difference]: Start difference. First operand 821 states and 3284 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 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) [2021-10-05 23:03:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:32,217 INFO L93 Difference]: Finished difference Result 1151 states and 4353 transitions. [2021-10-05 23:03:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 23:03:32,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 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 [2021-10-05 23:03:32,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:32,255 INFO L225 Difference]: With dead ends: 1151 [2021-10-05 23:03:32,256 INFO L226 Difference]: Without dead ends: 1071 [2021-10-05 23:03:32,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-10-05 23:03:32,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 907. [2021-10-05 23:03:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 906 states have (on average 3.9635761589403975) internal successors, (3591), 906 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 3591 transitions. [2021-10-05 23:03:32,314 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 3591 transitions. Word has length 28 [2021-10-05 23:03:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:32,315 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 3591 transitions. [2021-10-05 23:03:32,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 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) [2021-10-05 23:03:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 3591 transitions. [2021-10-05 23:03:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-05 23:03:32,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:32,321 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] [2021-10-05 23:03:32,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-05 23:03:32,322 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:32,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:32,323 INFO L82 PathProgramCache]: Analyzing trace with hash 253776433, now seen corresponding path program 1 times [2021-10-05 23:03:32,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:32,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548321388] [2021-10-05 23:03:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:32,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 23:03:32,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:32,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548321388] [2021-10-05 23:03:32,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548321388] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 23:03:32,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 23:03:32,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 23:03:32,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825507477] [2021-10-05 23:03:32,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 23:03:32,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:32,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 23:03:32,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:32,458 INFO L87 Difference]: Start difference. First operand 907 states and 3591 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2021-10-05 23:03:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:32,523 INFO L93 Difference]: Finished difference Result 1581 states and 5701 transitions. [2021-10-05 23:03:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 23:03:32,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 [2021-10-05 23:03:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:32,540 INFO L225 Difference]: With dead ends: 1581 [2021-10-05 23:03:32,540 INFO L226 Difference]: Without dead ends: 1429 [2021-10-05 23:03:32,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-05 23:03:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2021-10-05 23:03:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 995. [2021-10-05 23:03:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 3.943661971830986) internal successors, (3920), 994 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 3920 transitions. [2021-10-05 23:03:32,597 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 3920 transitions. Word has length 28 [2021-10-05 23:03:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:32,598 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 3920 transitions. [2021-10-05 23:03:32,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2021-10-05 23:03:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 3920 transitions. [2021-10-05 23:03:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-05 23:03:32,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:32,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:32,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-05 23:03:32,604 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:32,605 INFO L82 PathProgramCache]: Analyzing trace with hash 68670515, now seen corresponding path program 1 times [2021-10-05 23:03:32,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:32,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519501239] [2021-10-05 23:03:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:32,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 23:03:32,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:32,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519501239] [2021-10-05 23:03:32,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519501239] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 23:03:32,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 23:03:32,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 23:03:32,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418062439] [2021-10-05 23:03:32,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 23:03:32,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 23:03:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-05 23:03:32,686 INFO L87 Difference]: Start difference. First operand 995 states and 3920 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:32,812 INFO L93 Difference]: Finished difference Result 1709 states and 6386 transitions. [2021-10-05 23:03:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-05 23:03:32,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-10-05 23:03:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:32,833 INFO L225 Difference]: With dead ends: 1709 [2021-10-05 23:03:32,833 INFO L226 Difference]: Without dead ends: 1634 [2021-10-05 23:03:32,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-05 23:03:32,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-10-05 23:03:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 997. [2021-10-05 23:03:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 3.9387550200803214) internal successors, (3923), 996 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 3923 transitions. [2021-10-05 23:03:32,909 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 3923 transitions. Word has length 29 [2021-10-05 23:03:32,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:32,909 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 3923 transitions. [2021-10-05 23:03:32,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 3923 transitions. [2021-10-05 23:03:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-05 23:03:32,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:32,916 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:32,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-05 23:03:32,917 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:32,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:32,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1800010441, now seen corresponding path program 1 times [2021-10-05 23:03:32,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:32,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311619514] [2021-10-05 23:03:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:32,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 23:03:32,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:32,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311619514] [2021-10-05 23:03:33,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311619514] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 23:03:33,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 23:03:33,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 23:03:33,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686980840] [2021-10-05 23:03:33,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 23:03:33,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 23:03:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-05 23:03:33,003 INFO L87 Difference]: Start difference. First operand 997 states and 3923 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:33,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:33,106 INFO L93 Difference]: Finished difference Result 1281 states and 4837 transitions. [2021-10-05 23:03:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-05 23:03:33,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-10-05 23:03:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:33,120 INFO L225 Difference]: With dead ends: 1281 [2021-10-05 23:03:33,120 INFO L226 Difference]: Without dead ends: 1238 [2021-10-05 23:03:33,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-05 23:03:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-10-05 23:03:33,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 998. [2021-10-05 23:03:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 3.934804413239719) internal successors, (3923), 997 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 3923 transitions. [2021-10-05 23:03:33,174 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 3923 transitions. Word has length 29 [2021-10-05 23:03:33,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:33,174 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 3923 transitions. [2021-10-05 23:03:33,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 3923 transitions. [2021-10-05 23:03:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-05 23:03:33,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:33,180 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:33,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-05 23:03:33,180 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:33,181 INFO L82 PathProgramCache]: Analyzing trace with hash -557922877, now seen corresponding path program 1 times [2021-10-05 23:03:33,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:33,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782259346] [2021-10-05 23:03:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:33,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 23:03:33,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:33,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782259346] [2021-10-05 23:03:33,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782259346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:33,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091794931] [2021-10-05 23:03:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:33,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:03:33,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 23:03:33,287 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) [2021-10-05 23:03:33,297 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 [2021-10-05 23:03:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:33,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 23:03:33,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 23:03:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 23:03:33,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091794931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:33,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 23:03:33,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2021-10-05 23:03:33,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359218351] [2021-10-05 23:03:33,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-05 23:03:33,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-05 23:03:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-05 23:03:33,581 INFO L87 Difference]: Start difference. First operand 998 states and 3923 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:33,680 INFO L93 Difference]: Finished difference Result 1002 states and 3872 transitions. [2021-10-05 23:03:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 23:03:33,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 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 30 [2021-10-05 23:03:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:33,691 INFO L225 Difference]: With dead ends: 1002 [2021-10-05 23:03:33,691 INFO L226 Difference]: Without dead ends: 951 [2021-10-05 23:03:33,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-05 23:03:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-10-05 23:03:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 809. [2021-10-05 23:03:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 3.9344059405940595) internal successors, (3179), 808 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 3179 transitions. [2021-10-05 23:03:33,736 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 3179 transitions. Word has length 30 [2021-10-05 23:03:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:33,736 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 3179 transitions. [2021-10-05 23:03:33,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 3179 transitions. [2021-10-05 23:03:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-05 23:03:33,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:33,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:33,785 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 [2021-10-05 23:03:33,958 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,SelfDestructingSolverStorable7 [2021-10-05 23:03:33,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:33,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1248427955, now seen corresponding path program 1 times [2021-10-05 23:03:33,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:33,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41647978] [2021-10-05 23:03:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:33,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 23:03:34,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:34,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41647978] [2021-10-05 23:03:34,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41647978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:34,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258753411] [2021-10-05 23:03:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:34,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:03:34,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 23:03:34,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 23:03:34,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-05 23:03:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:34,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 23:03:34,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 23:03:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 23:03:34,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258753411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:34,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 23:03:34,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2021-10-05 23:03:34,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432950676] [2021-10-05 23:03:34,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-05 23:03:34,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:34,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-05 23:03:34,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-05 23:03:34,299 INFO L87 Difference]: Start difference. First operand 809 states and 3179 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:34,378 INFO L93 Difference]: Finished difference Result 841 states and 3175 transitions. [2021-10-05 23:03:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 23:03:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 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 30 [2021-10-05 23:03:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:34,388 INFO L225 Difference]: With dead ends: 841 [2021-10-05 23:03:34,388 INFO L226 Difference]: Without dead ends: 754 [2021-10-05 23:03:34,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-05 23:03:34,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-10-05 23:03:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2021-10-05 23:03:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 3.9322709163346614) internal successors, (2961), 753 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2961 transitions. [2021-10-05 23:03:34,426 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2961 transitions. Word has length 30 [2021-10-05 23:03:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:34,426 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 2961 transitions. [2021-10-05 23:03:34,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2961 transitions. [2021-10-05 23:03:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-05 23:03:34,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:34,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:34,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-05 23:03:34,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:03:34,648 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash -313532052, now seen corresponding path program 1 times [2021-10-05 23:03:34,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:34,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075494360] [2021-10-05 23:03:34,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:34,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-05 23:03:34,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:34,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075494360] [2021-10-05 23:03:34,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075494360] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 23:03:34,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 23:03:34,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 23:03:34,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73990662] [2021-10-05 23:03:34,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 23:03:34,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 23:03:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:34,708 INFO L87 Difference]: Start difference. First operand 754 states and 2961 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:34,748 INFO L93 Difference]: Finished difference Result 1560 states and 6130 transitions. [2021-10-05 23:03:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 23:03:34,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-05 23:03:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:34,766 INFO L225 Difference]: With dead ends: 1560 [2021-10-05 23:03:34,766 INFO L226 Difference]: Without dead ends: 1560 [2021-10-05 23:03:34,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-10-05 23:03:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 984. [2021-10-05 23:03:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 4.178026449643947) internal successors, (4107), 983 states have internal predecessors, (4107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 4107 transitions. [2021-10-05 23:03:34,847 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 4107 transitions. Word has length 33 [2021-10-05 23:03:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:34,847 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 4107 transitions. [2021-10-05 23:03:34,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 4107 transitions. [2021-10-05 23:03:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-05 23:03:34,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:34,853 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:34,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-05 23:03:34,854 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:34,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:34,854 INFO L82 PathProgramCache]: Analyzing trace with hash -862603828, now seen corresponding path program 1 times [2021-10-05 23:03:34,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:34,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298150125] [2021-10-05 23:03:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:34,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-05 23:03:34,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:34,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298150125] [2021-10-05 23:03:34,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298150125] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 23:03:34,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 23:03:34,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 23:03:34,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774475084] [2021-10-05 23:03:34,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 23:03:34,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:34,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 23:03:34,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:34,919 INFO L87 Difference]: Start difference. First operand 984 states and 4107 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:34,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:34,961 INFO L93 Difference]: Finished difference Result 1420 states and 6051 transitions. [2021-10-05 23:03:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 23:03:34,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-05 23:03:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:34,980 INFO L225 Difference]: With dead ends: 1420 [2021-10-05 23:03:34,980 INFO L226 Difference]: Without dead ends: 1420 [2021-10-05 23:03:34,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 23:03:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-05 23:03:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1202. [2021-10-05 23:03:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 4.228975853455454) internal successors, (5079), 1201 states have internal predecessors, (5079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 5079 transitions. [2021-10-05 23:03:35,045 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 5079 transitions. Word has length 33 [2021-10-05 23:03:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:35,045 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 5079 transitions. [2021-10-05 23:03:35,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 5079 transitions. [2021-10-05 23:03:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-05 23:03:35,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:35,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:35,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-05 23:03:35,052 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash 198338350, now seen corresponding path program 1 times [2021-10-05 23:03:35,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:35,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849575389] [2021-10-05 23:03:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:35,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:03:37,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:37,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849575389] [2021-10-05 23:03:37,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849575389] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:37,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320827190] [2021-10-05 23:03:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:37,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:03:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 23:03:37,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 23:03:37,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-05 23:03:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:37,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-05 23:03:38,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 23:03:38,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:03:38,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:03:38,284 INFO L354 Elim1Store]: treesize reduction 506, result has 10.3 percent of original size [2021-10-05 23:03:38,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 378 treesize of output 403 [2021-10-05 23:03:41,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:03:41,508 INFO L354 Elim1Store]: treesize reduction 164, result has 34.1 percent of original size [2021-10-05 23:03:41,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 5 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 92 treesize of output 158 [2021-10-05 23:03:42,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:03:42,618 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-05 23:03:42,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-10-05 23:03:43,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:03:43,116 INFO L354 Elim1Store]: treesize reduction 112, result has 25.3 percent of original size [2021-10-05 23:03:43,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 65 [2021-10-05 23:03:43,524 INFO L354 Elim1Store]: treesize reduction 84, result has 20.0 percent of original size [2021-10-05 23:03:43,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 54 [2021-10-05 23:03:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 23:03:43,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320827190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:43,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 23:03:43,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 27 [2021-10-05 23:03:43,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996379472] [2021-10-05 23:03:43,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-05 23:03:43,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-05 23:03:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2021-10-05 23:03:43,825 INFO L87 Difference]: Start difference. First operand 1202 states and 5079 transitions. Second operand has 29 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:48,018 INFO L93 Difference]: Finished difference Result 3322 states and 13804 transitions. [2021-10-05 23:03:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-05 23:03:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 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 35 [2021-10-05 23:03:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:48,052 INFO L225 Difference]: With dead ends: 3322 [2021-10-05 23:03:48,053 INFO L226 Difference]: Without dead ends: 3293 [2021-10-05 23:03:48,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 3937.2ms TimeCoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2021-10-05 23:03:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2021-10-05 23:03:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 1722. [2021-10-05 23:03:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 4.182452062754213) internal successors, (7198), 1721 states have internal predecessors, (7198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 7198 transitions. [2021-10-05 23:03:48,154 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 7198 transitions. Word has length 35 [2021-10-05 23:03:48,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:48,155 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 7198 transitions. [2021-10-05 23:03:48,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 7198 transitions. [2021-10-05 23:03:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-05 23:03:48,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:48,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:48,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-05 23:03:48,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-05 23:03:48,377 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:48,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1889348708, now seen corresponding path program 2 times [2021-10-05 23:03:48,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:48,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485501585] [2021-10-05 23:03:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:48,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:03:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 23:03:50,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:03:50,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485501585] [2021-10-05 23:03:50,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485501585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:50,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754018655] [2021-10-05 23:03:50,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-05 23:03:50,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:03:50,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 23:03:50,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 23:03:50,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-05 23:03:50,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-05 23:03:50,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 23:03:50,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-05 23:03:50,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 23:03:50,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:03:50,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:03:50,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:03:50,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:03:50,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-10-05 23:03:51,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-05 23:03:51,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-05 23:03:52,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:03:52,491 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-05 23:03:52,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-10-05 23:03:52,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:03:52,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:03:53,033 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-10-05 23:03:53,034 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 64 treesize of output 65 [2021-10-05 23:03:53,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:03:53,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:03:53,339 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-10-05 23:03:53,340 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 59 treesize of output 60 [2021-10-05 23:03:53,723 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-10-05 23:03:53,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 52 [2021-10-05 23:03:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:03:53,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754018655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:03:53,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 23:03:53,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2021-10-05 23:03:53,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952725020] [2021-10-05 23:03:53,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-05 23:03:53,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:03:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-05 23:03:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2021-10-05 23:03:53,886 INFO L87 Difference]: Start difference. First operand 1722 states and 7198 transitions. Second operand has 30 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 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) [2021-10-05 23:03:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:03:58,427 INFO L93 Difference]: Finished difference Result 3672 states and 15238 transitions. [2021-10-05 23:03:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-05 23:03:58,428 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 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) Word has length 35 [2021-10-05 23:03:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:03:58,451 INFO L225 Difference]: With dead ends: 3672 [2021-10-05 23:03:58,451 INFO L226 Difference]: Without dead ends: 3643 [2021-10-05 23:03:58,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 4361.4ms TimeCoverageRelationStatistics Valid=258, Invalid=1904, Unknown=0, NotChecked=0, Total=2162 [2021-10-05 23:03:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2021-10-05 23:03:58,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 2369. [2021-10-05 23:03:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2369 states, 2368 states have (on average 4.139780405405405) internal successors, (9803), 2368 states have internal predecessors, (9803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:03:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 9803 transitions. [2021-10-05 23:03:58,615 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 9803 transitions. Word has length 35 [2021-10-05 23:03:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:03:58,615 INFO L470 AbstractCegarLoop]: Abstraction has 2369 states and 9803 transitions. [2021-10-05 23:03:58,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 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) [2021-10-05 23:03:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 9803 transitions. [2021-10-05 23:03:58,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-05 23:03:58,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:03:58,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:03:58,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-05 23:03:58,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:03:58,842 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:03:58,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:03:58,843 INFO L82 PathProgramCache]: Analyzing trace with hash -839311784, now seen corresponding path program 3 times [2021-10-05 23:03:58,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:03:58,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484353609] [2021-10-05 23:03:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:03:58,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:03:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:04:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:04:01,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:04:01,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484353609] [2021-10-05 23:04:01,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484353609] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:04:01,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253558514] [2021-10-05 23:04:01,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-05 23:04:01,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:04:01,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 23:04:01,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 23:04:01,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-05 23:04:02,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-05 23:04:02,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 23:04:02,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-05 23:04:02,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 23:04:02,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:02,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:02,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:02,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:02,263 INFO L354 Elim1Store]: treesize reduction 446, result has 10.6 percent of original size [2021-10-05 23:04:02,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 63 [2021-10-05 23:04:02,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-05 23:04:03,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:03,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:03,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:03,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:03,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:03,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:03,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:03,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:03,461 INFO L354 Elim1Store]: treesize reduction 264, result has 12.3 percent of original size [2021-10-05 23:04:03,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 8 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 111 [2021-10-05 23:04:05,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-05 23:04:05,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:05,552 INFO L354 Elim1Store]: treesize reduction 176, result has 31.5 percent of original size [2021-10-05 23:04:05,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 32 case distinctions, treesize of input 84 treesize of output 144 [2021-10-05 23:04:06,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-05 23:04:06,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-05 23:04:06,956 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-05 23:04:06,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 44 [2021-10-05 23:04:07,246 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-05 23:04:07,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 44 [2021-10-05 23:04:08,102 INFO L354 Elim1Store]: treesize reduction 138, result has 16.9 percent of original size [2021-10-05 23:04:08,103 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 84 treesize of output 79 [2021-10-05 23:04:08,462 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-10-05 23:04:08,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 38 [2021-10-05 23:04:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:04:08,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253558514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:04:08,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 23:04:08,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2021-10-05 23:04:08,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781850984] [2021-10-05 23:04:08,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-05 23:04:08,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:04:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-05 23:04:08,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2021-10-05 23:04:08,544 INFO L87 Difference]: Start difference. First operand 2369 states and 9803 transitions. Second operand has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:04:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:04:21,215 INFO L93 Difference]: Finished difference Result 5191 states and 21652 transitions. [2021-10-05 23:04:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-05 23:04:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 0 states have call successors, (0), 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 35 [2021-10-05 23:04:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:04:21,247 INFO L225 Difference]: With dead ends: 5191 [2021-10-05 23:04:21,247 INFO L226 Difference]: Without dead ends: 5162 [2021-10-05 23:04:21,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 7328.1ms TimeCoverageRelationStatistics Valid=317, Invalid=2545, Unknown=0, NotChecked=0, Total=2862 [2021-10-05 23:04:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2021-10-05 23:04:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 2126. [2021-10-05 23:04:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 4.145882352941176) internal successors, (8810), 2125 states have internal predecessors, (8810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:04:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 8810 transitions. [2021-10-05 23:04:21,371 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 8810 transitions. Word has length 35 [2021-10-05 23:04:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:04:21,371 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 8810 transitions. [2021-10-05 23:04:21,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:04:21,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 8810 transitions. [2021-10-05 23:04:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-05 23:04:21,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 23:04:21,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 23:04:21,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-05 23:04:21,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-05 23:04:21,595 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-05 23:04:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 23:04:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash -340879716, now seen corresponding path program 4 times [2021-10-05 23:04:21,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 23:04:21,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506422542] [2021-10-05 23:04:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 23:04:21,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 23:04:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 23:04:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:04:24,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 23:04:24,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506422542] [2021-10-05 23:04:24,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506422542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:04:24,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676534502] [2021-10-05 23:04:24,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-05 23:04:24,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 23:04:24,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 23:04:24,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 23:04:24,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-05 23:04:25,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-05 23:04:25,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 23:04:25,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-05 23:04:25,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 23:04:25,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:25,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:25,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:25,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-05 23:04:25,295 INFO L354 Elim1Store]: treesize reduction 446, result has 10.6 percent of original size [2021-10-05 23:04:25,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 63 [2021-10-05 23:04:26,410 INFO L354 Elim1Store]: treesize reduction 204, result has 29.4 percent of original size [2021-10-05 23:04:26,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 140 [2021-10-05 23:04:27,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-05 23:04:27,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 118 [2021-10-05 23:04:28,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:04:28,755 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-05 23:04:28,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 114 [2021-10-05 23:04:29,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-05 23:04:29,173 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-05 23:04:29,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 89 [2021-10-05 23:04:31,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-05 23:04:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 23:04:31,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676534502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 23:04:31,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 23:04:31,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 34 [2021-10-05 23:04:31,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664009364] [2021-10-05 23:04:31,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-05 23:04:31,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 23:04:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-05 23:04:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2021-10-05 23:04:31,375 INFO L87 Difference]: Start difference. First operand 2126 states and 8810 transitions. Second operand has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:04:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 23:04:59,995 INFO L93 Difference]: Finished difference Result 10572 states and 41731 transitions. [2021-10-05 23:04:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-05 23:04:59,996 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 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 35 [2021-10-05 23:04:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 23:04:59,996 INFO L225 Difference]: With dead ends: 10572 [2021-10-05 23:04:59,996 INFO L226 Difference]: Without dead ends: 0 [2021-10-05 23:04:59,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2439 ImplicationChecksByTransitivity, 15230.6ms TimeCoverageRelationStatistics Valid=1029, Invalid=7901, Unknown=0, NotChecked=0, Total=8930 [2021-10-05 23:05:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-05 23:05:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-05 23:05:00,000 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) [2021-10-05 23:05:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-05 23:05:00,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-05 23:05:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 23:05:00,001 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-05 23:05:00,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 23:05:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-05 23:05:00,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-05 23:05:00,003 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-05 23:05:00,004 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-05 23:05:00,004 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-05 23:05:00,004 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-05 23:05:00,004 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-05 23:05:00,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-05 23:05:00,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-05 23:05:00,212 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-05 23:05:00,212 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-05 23:05:00,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:05:00 BasicIcfg [2021-10-05 23:05:00,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-05 23:05:00,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-05 23:05:00,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-05 23:05:00,215 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-05 23:05:00,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:03:19" (3/4) ... [2021-10-05 23:05:00,218 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-05 23:05:00,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-05 23:05:00,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-05 23:05:00,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-05 23:05:00,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-05 23:05:00,230 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-10-05 23:05:00,231 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-05 23:05:00,231 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 23:05:00,232 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 23:05:00,288 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-05 23:05:00,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-05 23:05:00,290 INFO L168 Benchmark]: Toolchain (without parser) took 102454.46 ms. Allocated memory was 48.2 MB in the beginning and 264.2 MB in the end (delta: 216.0 MB). Free memory was 24.8 MB in the beginning and 144.3 MB in the end (delta: -119.5 MB). Peak memory consumption was 99.6 MB. Max. memory is 16.1 GB. [2021-10-05 23:05:00,290 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 39.8 MB. Free memory was 19.1 MB in the beginning and 19.0 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 23:05:00,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.19 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 24.5 MB in the end (delta: 91.2 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-05 23:05:00,291 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.99 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 22.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 23:05:00,292 INFO L168 Benchmark]: Boogie Preprocessor took 51.36 ms. Allocated memory is still 48.2 MB. Free memory was 22.1 MB in the beginning and 31.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-05 23:05:00,292 INFO L168 Benchmark]: RCFGBuilder took 1044.28 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 31.5 MB in the beginning and 39.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-10-05 23:05:00,293 INFO L168 Benchmark]: TraceAbstraction took 100866.66 ms. Allocated memory was 58.7 MB in the beginning and 264.2 MB in the end (delta: 205.5 MB). Free memory was 39.0 MB in the beginning and 149.6 MB in the end (delta: -110.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 16.1 GB. [2021-10-05 23:05:00,293 INFO L168 Benchmark]: Witness Printer took 73.94 ms. Allocated memory is still 264.2 MB. Free memory was 148.5 MB in the beginning and 144.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-05 23:05:00,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 39.8 MB. Free memory was 19.1 MB in the beginning and 19.0 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.19 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 24.5 MB in the end (delta: 91.2 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.99 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 22.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.36 ms. Allocated memory is still 48.2 MB. Free memory was 22.1 MB in the beginning and 31.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1044.28 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 31.5 MB in the beginning and 39.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 100866.66 ms. Allocated memory was 58.7 MB in the beginning and 264.2 MB in the end (delta: 205.5 MB). Free memory was 39.0 MB in the beginning and 149.6 MB in the end (delta: -110.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 16.1 GB. * Witness Printer took 73.94 ms. Allocated memory is still 264.2 MB. Free memory was 148.5 MB in the beginning and 144.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10511.8ms, 202 PlacesBefore, 46 PlacesAfterwards, 208 TransitionsBefore, 40 TransitionsAfterwards, 1100 CoEnabledTransitionPairs, 7 FixpointIterations, 137 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 194 TotalNumberOfCompositions, 2807 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1998, positive: 1892, positive conditional: 0, positive unconditional: 1892, negative: 106, negative conditional: 0, negative unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 731, positive: 710, positive conditional: 0, positive unconditional: 710, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 731, positive: 698, positive conditional: 0, positive unconditional: 698, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 152, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1998, positive: 1182, positive conditional: 0, positive unconditional: 1182, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 731, unknown conditional: 0, unknown unconditional: 731] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 152, Positive conditional cache size: 0, Positive unconditional cache size: 152, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - 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: 116]: 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 9 procedures, 212 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 100645.7ms, OverallIterations: 15, TraceHistogramMax: 1, EmptinessCheckTime: 116.6ms, AutomataDifference: 51272.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10601.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 569 SDtfs, 2861 SDslu, 3341 SDs, 0 SdLazy, 9265 SolverSat, 678 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 26051.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 493 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3576 ImplicationChecksByTransitivity, 31056.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2369occurred in iteration=13, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1074.2ms AutomataMinimizationTime, 15 MinimizatonAttempts, 8596 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 192.5ms SsaConstructionTime, 1534.1ms SatisfiabilityAnalysisTime, 32817.9ms InterpolantComputationTime, 682 NumberOfCodeBlocks, 682 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 660 ConstructedInterpolants, 43 QuantifiedInterpolants, 17729 SizeOfPredicates, 155 NumberOfNonLiveVariables, 2034 ConjunctsInSsa, 335 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 38/97 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! [2021-10-05 23:05:00,400 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...