./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c503be2a 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/parallel-misc-4.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 3830c20323b2260c1b4fa6c40d333ff867c072be ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 17:45:54,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 17:45:54,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 17:45:54,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 17:45:54,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 17:45:54,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 17:45:54,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 17:45:54,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 17:45:54,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 17:45:54,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 17:45:54,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 17:45:54,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 17:45:54,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 17:45:54,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 17:45:54,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 17:45:54,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 17:45:54,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 17:45:54,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 17:45:54,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 17:45:54,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 17:45:54,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 17:45:54,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 17:45:54,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 17:45:54,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 17:45:54,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 17:45:54,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 17:45:54,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 17:45:54,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 17:45:54,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 17:45:54,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 17:45:54,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 17:45:54,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 17:45:54,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 17:45:54,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 17:45:54,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 17:45:54,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 17:45:54,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 17:45:54,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 17:45:54,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 17:45:54,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 17:45:54,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 17:45:54,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 17:45:54,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 17:45:54,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 17:45:54,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 17:45:54,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 17:45:54,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 17:45:54,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 17:45:54,553 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 17:45:54,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 17:45:54,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 17:45:54,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 17:45:54,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 17:45:54,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 17:45:54,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 17:45:54,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 17:45:54,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 17:45:54,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 17:45:54,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 17:45:54,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 17:45:54,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 17:45:54,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 17:45:54,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 17:45:54,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 17:45:54,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 17:45:54,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 17:45:54,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 17:45:54,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 17:45:54,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 17:45:54,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 17:45:54,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 17:45:54,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 17:45:54,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3830c20323b2260c1b4fa6c40d333ff867c072be [2021-10-13 17:45:54,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 17:45:55,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 17:45:55,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 17:45:55,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 17:45:55,017 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 17:45:55,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-13 17:45:55,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fc550f55/3d3023cd89a844aab2a2f96148065e11/FLAG81feaee4a [2021-10-13 17:45:55,774 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 17:45:55,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2021-10-13 17:45:55,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fc550f55/3d3023cd89a844aab2a2f96148065e11/FLAG81feaee4a [2021-10-13 17:45:56,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9fc550f55/3d3023cd89a844aab2a2f96148065e11 [2021-10-13 17:45:56,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 17:45:56,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 17:45:56,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 17:45:56,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 17:45:56,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 17:45:56,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768049f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56, skipping insertion in model container [2021-10-13 17:45:56,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 17:45:56,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 17:45:56,473 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/parallel-misc-4.wvr.c[2422,2435] [2021-10-13 17:45:56,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 17:45:56,489 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 17:45:56,515 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/parallel-misc-4.wvr.c[2422,2435] [2021-10-13 17:45:56,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 17:45:56,534 INFO L208 MainTranslator]: Completed translation [2021-10-13 17:45:56,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56 WrapperNode [2021-10-13 17:45:56,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 17:45:56,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 17:45:56,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 17:45:56,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 17:45:56,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 17:45:56,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 17:45:56,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 17:45:56,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 17:45:56,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 17:45:56,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 17:45:56,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 17:45:56,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 17:45:56,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (1/1) ... [2021-10-13 17:45:56,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 17:45:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:56,682 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) [2021-10-13 17:45:56,696 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 [2021-10-13 17:45:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 17:45:56,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 17:45:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 17:45:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 17:45:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 17:45:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 17:45:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 17:45:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 17:45:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 17:45:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 17:45:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 17:45:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 17:45:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 17:45:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 17:45:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 17:45:56,773 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 17:45:57,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 17:45:57,230 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 17:45:57,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:45:57 BoogieIcfgContainer [2021-10-13 17:45:57,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 17:45:57,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 17:45:57,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 17:45:57,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 17:45:57,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:45:56" (1/3) ... [2021-10-13 17:45:57,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194336dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:45:57, skipping insertion in model container [2021-10-13 17:45:57,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:45:56" (2/3) ... [2021-10-13 17:45:57,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194336dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:45:57, skipping insertion in model container [2021-10-13 17:45:57,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:45:57" (3/3) ... [2021-10-13 17:45:57,246 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2021-10-13 17:45:57,261 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 17:45:57,262 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 17:45:57,262 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 17:45:57,262 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 17:45:57,295 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,295 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,295 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,297 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,297 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,298 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,298 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,298 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,299 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,299 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,300 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,300 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,304 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,304 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,307 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,307 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:45:57,319 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 17:45:57,367 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 17:45:57,375 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 [2021-10-13 17:45:57,376 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 17:45:57,393 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 17:45:57,406 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 95 transitions, 214 flow [2021-10-13 17:45:57,409 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 95 transitions, 214 flow [2021-10-13 17:45:57,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 214 flow [2021-10-13 17:45:57,467 INFO L129 PetriNetUnfolder]: 7/92 cut-off events. [2021-10-13 17:45:57,467 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 17:45:57,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 7/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-10-13 17:45:57,475 INFO L116 LiptonReduction]: Number of co-enabled transitions 914 [2021-10-13 17:46:02,081 INFO L131 LiptonReduction]: Checked pairs total: 2122 [2021-10-13 17:46:02,081 INFO L133 LiptonReduction]: Total number of compositions: 76 [2021-10-13 17:46:02,095 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 28 transitions, 80 flow [2021-10-13 17:46:02,119 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 17:46:02,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:02,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:46:02,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1345697165, now seen corresponding path program 1 times [2021-10-13 17:46:02,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:02,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852317219] [2021-10-13 17:46:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:02,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:02,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:02,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852317219] [2021-10-13 17:46:02,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852317219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:46:02,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:46:02,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 17:46:02,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343318153] [2021-10-13 17:46:02,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 17:46:02,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:02,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 17:46:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:46:02,605 INFO L87 Difference]: Start difference. First operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:02,656 INFO L93 Difference]: Finished difference Result 124 states and 368 transitions. [2021-10-13 17:46:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 17:46:02,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-13 17:46:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:02,672 INFO L225 Difference]: With dead ends: 124 [2021-10-13 17:46:02,672 INFO L226 Difference]: Without dead ends: 88 [2021-10-13 17:46:02,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:46:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-13 17:46:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-13 17:46:02,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 239 transitions. [2021-10-13 17:46:02,726 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 239 transitions. Word has length 16 [2021-10-13 17:46:02,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:02,727 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 239 transitions. [2021-10-13 17:46:02,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 239 transitions. [2021-10-13 17:46:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 17:46:02,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:02,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:46:02,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 17:46:02,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:02,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:02,731 INFO L82 PathProgramCache]: Analyzing trace with hash 718215365, now seen corresponding path program 2 times [2021-10-13 17:46:02,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:02,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606840850] [2021-10-13 17:46:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:02,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:02,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:02,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606840850] [2021-10-13 17:46:02,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606840850] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:46:02,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:46:02,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 17:46:02,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549526272] [2021-10-13 17:46:02,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 17:46:02,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 17:46:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 17:46:02,862 INFO L87 Difference]: Start difference. First operand 88 states and 239 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:02,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:02,981 INFO L93 Difference]: Finished difference Result 158 states and 440 transitions. [2021-10-13 17:46:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 17:46:02,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-13 17:46:02,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:02,985 INFO L225 Difference]: With dead ends: 158 [2021-10-13 17:46:02,985 INFO L226 Difference]: Without dead ends: 130 [2021-10-13 17:46:02,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 17:46:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-13 17:46:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-13 17:46:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.9147286821705425) internal successors, (376), 129 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 376 transitions. [2021-10-13 17:46:03,011 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 376 transitions. Word has length 16 [2021-10-13 17:46:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:03,012 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 376 transitions. [2021-10-13 17:46:03,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 376 transitions. [2021-10-13 17:46:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 17:46:03,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:03,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:46:03,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 17:46:03,015 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1454452983, now seen corresponding path program 1 times [2021-10-13 17:46:03,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:03,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069572413] [2021-10-13 17:46:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:03,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:03,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:03,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069572413] [2021-10-13 17:46:03,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069572413] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:46:03,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:46:03,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 17:46:03,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426137694] [2021-10-13 17:46:03,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 17:46:03,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:03,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 17:46:03,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:46:03,089 INFO L87 Difference]: Start difference. First operand 130 states and 376 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:03,103 INFO L93 Difference]: Finished difference Result 156 states and 410 transitions. [2021-10-13 17:46:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 17:46:03,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-13 17:46:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:03,107 INFO L225 Difference]: With dead ends: 156 [2021-10-13 17:46:03,107 INFO L226 Difference]: Without dead ends: 156 [2021-10-13 17:46:03,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:46:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-13 17:46:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2021-10-13 17:46:03,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.8661417322834644) internal successors, (364), 127 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 364 transitions. [2021-10-13 17:46:03,123 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 364 transitions. Word has length 18 [2021-10-13 17:46:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:03,124 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 364 transitions. [2021-10-13 17:46:03,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 364 transitions. [2021-10-13 17:46:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 17:46:03,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:03,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:46:03,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 17:46:03,127 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:03,128 INFO L82 PathProgramCache]: Analyzing trace with hash 831948087, now seen corresponding path program 1 times [2021-10-13 17:46:03,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:03,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695765986] [2021-10-13 17:46:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:03,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:03,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:03,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695765986] [2021-10-13 17:46:03,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695765986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:46:03,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:46:03,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 17:46:03,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674338201] [2021-10-13 17:46:03,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 17:46:03,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 17:46:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 17:46:03,295 INFO L87 Difference]: Start difference. First operand 128 states and 364 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:03,391 INFO L93 Difference]: Finished difference Result 210 states and 608 transitions. [2021-10-13 17:46:03,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 17:46:03,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-13 17:46:03,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:03,394 INFO L225 Difference]: With dead ends: 210 [2021-10-13 17:46:03,394 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 17:46:03,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 17:46:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 17:46:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 156. [2021-10-13 17:46:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 460 transitions. [2021-10-13 17:46:03,439 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 460 transitions. Word has length 18 [2021-10-13 17:46:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:03,439 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 460 transitions. [2021-10-13 17:46:03,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 460 transitions. [2021-10-13 17:46:03,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 17:46:03,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:03,447 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:46:03,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 17:46:03,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:03,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:03,448 INFO L82 PathProgramCache]: Analyzing trace with hash 547546224, now seen corresponding path program 1 times [2021-10-13 17:46:03,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:03,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177387253] [2021-10-13 17:46:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:03,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:03,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:03,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177387253] [2021-10-13 17:46:03,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177387253] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:46:03,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:46:03,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 17:46:03,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300275217] [2021-10-13 17:46:03,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 17:46:03,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 17:46:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:46:03,564 INFO L87 Difference]: Start difference. First operand 156 states and 460 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:03,576 INFO L93 Difference]: Finished difference Result 208 states and 589 transitions. [2021-10-13 17:46:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 17:46:03,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-13 17:46:03,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:03,579 INFO L225 Difference]: With dead ends: 208 [2021-10-13 17:46:03,579 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 17:46:03,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:46:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 17:46:03,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 184. [2021-10-13 17:46:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 3.010928961748634) internal successors, (551), 183 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 551 transitions. [2021-10-13 17:46:03,595 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 551 transitions. Word has length 18 [2021-10-13 17:46:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:03,595 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 551 transitions. [2021-10-13 17:46:03,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 551 transitions. [2021-10-13 17:46:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 17:46:03,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:03,598 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] [2021-10-13 17:46:03,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 17:46:03,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:03,599 INFO L82 PathProgramCache]: Analyzing trace with hash -194381863, now seen corresponding path program 1 times [2021-10-13 17:46:03,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:03,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594984539] [2021-10-13 17:46:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:03,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:03,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:03,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594984539] [2021-10-13 17:46:03,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594984539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:46:03,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599096663] [2021-10-13 17:46:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:03,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:46:03,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:46:03,685 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) [2021-10-13 17:46:03,695 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 [2021-10-13 17:46:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:03,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 17:46:03,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:46:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:03,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599096663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:46:03,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:46:03,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-13 17:46:03,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158012097] [2021-10-13 17:46:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 17:46:03,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 17:46:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 17:46:03,967 INFO L87 Difference]: Start difference. First operand 184 states and 551 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:04,109 INFO L93 Difference]: Finished difference Result 352 states and 1063 transitions. [2021-10-13 17:46:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 17:46:04,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 17:46:04,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:04,116 INFO L225 Difference]: With dead ends: 352 [2021-10-13 17:46:04,116 INFO L226 Difference]: Without dead ends: 306 [2021-10-13 17:46:04,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.5ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:46:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-10-13 17:46:04,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 220. [2021-10-13 17:46:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.0730593607305936) internal successors, (673), 219 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 673 transitions. [2021-10-13 17:46:04,160 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 673 transitions. Word has length 20 [2021-10-13 17:46:04,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:04,160 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 673 transitions. [2021-10-13 17:46:04,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 673 transitions. [2021-10-13 17:46:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 17:46:04,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:04,170 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] [2021-10-13 17:46:04,217 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 [2021-10-13 17:46:04,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:46:04,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:04,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:04,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2078954813, now seen corresponding path program 1 times [2021-10-13 17:46:04,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:04,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263523488] [2021-10-13 17:46:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:04,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:04,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:04,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263523488] [2021-10-13 17:46:04,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263523488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:46:04,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787418025] [2021-10-13 17:46:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:04,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:46:04,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:46:04,477 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) [2021-10-13 17:46:04,479 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 [2021-10-13 17:46:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:04,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 17:46:04,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:46:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:04,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787418025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:46:04,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:46:04,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-13 17:46:04,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606268797] [2021-10-13 17:46:04,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 17:46:04,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:04,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 17:46:04,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 17:46:04,661 INFO L87 Difference]: Start difference. First operand 220 states and 673 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:04,783 INFO L93 Difference]: Finished difference Result 490 states and 1540 transitions. [2021-10-13 17:46:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 17:46:04,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 17:46:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:04,789 INFO L225 Difference]: With dead ends: 490 [2021-10-13 17:46:04,789 INFO L226 Difference]: Without dead ends: 444 [2021-10-13 17:46:04,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:46:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-13 17:46:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 410. [2021-10-13 17:46:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 3.2102689486552567) internal successors, (1313), 409 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1313 transitions. [2021-10-13 17:46:04,814 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1313 transitions. Word has length 20 [2021-10-13 17:46:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:04,815 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1313 transitions. [2021-10-13 17:46:04,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1313 transitions. [2021-10-13 17:46:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 17:46:04,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:04,819 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:46:04,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-13 17:46:05,039 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,SelfDestructingSolverStorable6 [2021-10-13 17:46:05,040 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:05,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:05,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1345014267, now seen corresponding path program 2 times [2021-10-13 17:46:05,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:05,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960884840] [2021-10-13 17:46:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:05,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:46:05,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:05,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960884840] [2021-10-13 17:46:05,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960884840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:46:05,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:46:05,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 17:46:05,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054571603] [2021-10-13 17:46:05,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 17:46:05,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 17:46:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 17:46:05,144 INFO L87 Difference]: Start difference. First operand 410 states and 1313 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:05,176 INFO L93 Difference]: Finished difference Result 598 states and 1772 transitions. [2021-10-13 17:46:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 17:46:05,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 17:46:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:05,182 INFO L225 Difference]: With dead ends: 598 [2021-10-13 17:46:05,182 INFO L226 Difference]: Without dead ends: 598 [2021-10-13 17:46:05,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 17:46:05,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-13 17:46:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 522. [2021-10-13 17:46:05,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 3.1190019193857967) internal successors, (1625), 521 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1625 transitions. [2021-10-13 17:46:05,204 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1625 transitions. Word has length 22 [2021-10-13 17:46:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:05,205 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 1625 transitions. [2021-10-13 17:46:05,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:05,205 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1625 transitions. [2021-10-13 17:46:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 17:46:05,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:05,208 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:46:05,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 17:46:05,208 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:05,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash 954562696, now seen corresponding path program 2 times [2021-10-13 17:46:05,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:05,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163165538] [2021-10-13 17:46:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:05,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:46:05,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:05,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163165538] [2021-10-13 17:46:05,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163165538] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:46:05,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:46:05,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 17:46:05,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400871907] [2021-10-13 17:46:05,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 17:46:05,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 17:46:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 17:46:05,286 INFO L87 Difference]: Start difference. First operand 522 states and 1625 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:05,319 INFO L93 Difference]: Finished difference Result 502 states and 1428 transitions. [2021-10-13 17:46:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 17:46:05,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 17:46:05,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:05,323 INFO L225 Difference]: With dead ends: 502 [2021-10-13 17:46:05,324 INFO L226 Difference]: Without dead ends: 502 [2021-10-13 17:46:05,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 17:46:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-13 17:46:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2021-10-13 17:46:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 2.9140461215932913) internal successors, (1390), 477 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1390 transitions. [2021-10-13 17:46:05,345 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1390 transitions. Word has length 22 [2021-10-13 17:46:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:05,345 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1390 transitions. [2021-10-13 17:46:05,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:05,345 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1390 transitions. [2021-10-13 17:46:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 17:46:05,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:05,348 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] [2021-10-13 17:46:05,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 17:46:05,348 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1481150177, now seen corresponding path program 1 times [2021-10-13 17:46:05,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:05,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464898851] [2021-10-13 17:46:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:05,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:05,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:05,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464898851] [2021-10-13 17:46:05,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464898851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:46:05,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708224106] [2021-10-13 17:46:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:05,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:46:05,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:46:05,462 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) [2021-10-13 17:46:05,475 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 [2021-10-13 17:46:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:05,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 17:46:05,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:46:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:05,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708224106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:46:05,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:46:05,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-13 17:46:05,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014364115] [2021-10-13 17:46:05,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 17:46:05,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 17:46:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:46:05,681 INFO L87 Difference]: Start difference. First operand 478 states and 1390 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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) [2021-10-13 17:46:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:05,849 INFO L93 Difference]: Finished difference Result 816 states and 2351 transitions. [2021-10-13 17:46:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 17:46:05,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 24 [2021-10-13 17:46:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:05,857 INFO L225 Difference]: With dead ends: 816 [2021-10-13 17:46:05,857 INFO L226 Difference]: Without dead ends: 766 [2021-10-13 17:46:05,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:46:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-10-13 17:46:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 368. [2021-10-13 17:46:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.9019073569482288) internal successors, (1065), 367 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1065 transitions. [2021-10-13 17:46:05,879 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1065 transitions. Word has length 24 [2021-10-13 17:46:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:05,880 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1065 transitions. [2021-10-13 17:46:05,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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) [2021-10-13 17:46:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1065 transitions. [2021-10-13 17:46:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 17:46:05,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:46:05,882 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] [2021-10-13 17:46:05,926 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 [2021-10-13 17:46:06,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:46:06,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:46:06,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:46:06,099 INFO L82 PathProgramCache]: Analyzing trace with hash 932345125, now seen corresponding path program 2 times [2021-10-13 17:46:06,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:46:06,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874230260] [2021-10-13 17:46:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:46:06,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:46:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:46:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:06,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:46:06,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874230260] [2021-10-13 17:46:06,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874230260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:46:06,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908028244] [2021-10-13 17:46:06,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 17:46:06,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:46:06,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:46:06,187 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) [2021-10-13 17:46:06,212 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 [2021-10-13 17:46:06,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 17:46:06,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:46:06,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 17:46:06,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:46:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:46:06,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908028244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:46:06,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:46:06,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-13 17:46:06,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500720910] [2021-10-13 17:46:06,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:46:06,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:46:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:46:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:46:06,399 INFO L87 Difference]: Start difference. First operand 368 states and 1065 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:46:06,567 INFO L93 Difference]: Finished difference Result 662 states and 1905 transitions. [2021-10-13 17:46:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 17:46:06,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 17:46:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:46:06,569 INFO L225 Difference]: With dead ends: 662 [2021-10-13 17:46:06,569 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 17:46:06,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:46:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 17:46:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 17:46:06,570 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) [2021-10-13 17:46:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 17:46:06,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-10-13 17:46:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:46:06,571 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 17:46:06,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:46:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 17:46:06,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 17:46:06,574 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 17:46:06,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 17:46:06,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 17:46:06,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 17:46:06,613 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 [2021-10-13 17:46:06,791 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,SelfDestructingSolverStorable10 [2021-10-13 17:46:06,798 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 17:46:06,798 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 17:46:06,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:46:06 BasicIcfg [2021-10-13 17:46:06,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 17:46:06,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 17:46:06,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 17:46:06,801 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 17:46:06,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:45:57" (3/4) ... [2021-10-13 17:46:06,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 17:46:06,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-13 17:46:06,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-13 17:46:06,830 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-13 17:46:06,843 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-13 17:46:06,843 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 17:46:06,844 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 17:46:06,844 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 17:46:07,000 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-13 17:46:07,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 17:46:07,008 INFO L168 Benchmark]: Toolchain (without parser) took 10894.46 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 25.0 MB in the beginning and 68.8 MB in the end (delta: -43.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-10-13 17:46:07,009 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 37.7 MB. Free memory is still 17.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 17:46:07,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.40 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 25.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-13 17:46:07,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.22 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 24.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 17:46:07,010 INFO L168 Benchmark]: Boogie Preprocessor took 45.12 ms. Allocated memory is still 48.2 MB. Free memory was 24.1 MB in the beginning and 22.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 17:46:07,010 INFO L168 Benchmark]: RCFGBuilder took 603.36 ms. Allocated memory is still 48.2 MB. Free memory was 22.8 MB in the beginning and 21.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2021-10-13 17:46:07,011 INFO L168 Benchmark]: TraceAbstraction took 9565.41 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 21.1 MB in the beginning and 71.8 MB in the end (delta: -50.7 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-13 17:46:07,012 INFO L168 Benchmark]: Witness Printer took 199.63 ms. Allocated memory is still 104.9 MB. Free memory was 71.8 MB in the beginning and 68.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 17:46:07,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 37.7 MB. Free memory is still 17.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 419.40 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 25.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.22 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 24.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.12 ms. Allocated memory is still 48.2 MB. Free memory was 24.1 MB in the beginning and 22.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 603.36 ms. Allocated memory is still 48.2 MB. Free memory was 22.8 MB in the beginning and 21.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9565.41 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 21.1 MB in the beginning and 71.8 MB in the end (delta: -50.7 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Witness Printer took 199.63 ms. Allocated memory is still 104.9 MB. Free memory was 71.8 MB in the beginning and 68.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4672.4ms, 98 PlacesBefore, 34 PlacesAfterwards, 95 TransitionsBefore, 28 TransitionsAfterwards, 914 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 76 TotalNumberOfCompositions, 2122 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1833, positive: 1757, positive conditional: 0, positive unconditional: 1757, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 778, positive: 748, positive conditional: 0, positive unconditional: 748, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 778, positive: 732, positive conditional: 0, positive unconditional: 732, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 176, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 119, negative conditional: 0, negative unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1833, positive: 1009, positive conditional: 0, positive unconditional: 1009, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 778, unknown conditional: 0, unknown unconditional: 778] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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: 100]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9432.3ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 49.2ms, AutomataDifference: 1064.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4743.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 357 SDtfs, 318 SDslu, 646 SDs, 0 SdLazy, 532 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 557.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 241.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=522occurred in iteration=8, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 261.1ms AutomataMinimizationTime, 11 MinimizatonAttempts, 696 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 72.3ms SsaConstructionTime, 609.4ms SatisfiabilityAnalysisTime, 1277.3ms InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 SizeOfPredicates, 28 NumberOfNonLiveVariables, 554 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 27/53 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! [2021-10-13 17:46:07,061 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...