./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF --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 c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:00:48,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:00:48,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:00:48,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:00:48,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:00:48,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:00:48,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:00:48,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:00:48,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:00:48,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:00:48,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:00:48,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:00:48,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:00:48,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:00:48,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:00:48,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:00:48,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:00:48,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:00:48,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:00:48,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:00:48,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:00:48,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:00:48,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:00:48,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:00:48,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:00:48,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:00:48,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:00:48,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:00:48,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:00:48,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:00:48,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:00:48,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:00:48,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:00:48,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:00:48,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:00:48,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:00:48,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:00:48,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:00:48,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:00:48,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:00:48,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:00:48,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:00:48,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:00:48,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:00:48,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:00:48,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:00:48,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:00:48,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:00:48,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:00:48,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:00:48,752 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:00:48,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:00:48,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:00:48,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:00:48,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:00:48,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:00:48,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:00:48,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:00:48,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:00:48,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:00:48,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:00:48,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:00:48,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:00:48,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:00:48,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:00:48,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:00:48,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:00:48,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:00:48,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:00:48,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:00:48,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:00:48,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:00:48,761 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:00:48,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:00:48,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:00:48,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:00:48,762 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2021-11-20 07:00:49,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:00:49,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:00:49,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:00:49,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:00:49,130 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:00:49,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-20 07:00:49,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/data/f38b5796e/22add3ab61c348678cc5f85b4128d168/FLAGadd93dc92 [2021-11-20 07:00:49,796 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:00:49,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-20 07:00:49,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/data/f38b5796e/22add3ab61c348678cc5f85b4128d168/FLAGadd93dc92 [2021-11-20 07:00:50,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/data/f38b5796e/22add3ab61c348678cc5f85b4128d168 [2021-11-20 07:00:50,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:00:50,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:00:50,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:00:50,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:00:50,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:00:50,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193547d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50, skipping insertion in model container [2021-11-20 07:00:50,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:00:50,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:00:50,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-20 07:00:50,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:00:50,576 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:00:50,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-20 07:00:50,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:00:50,643 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:00:50,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50 WrapperNode [2021-11-20 07:00:50,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:00:50,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:00:50,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:00:50,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:00:50,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,705 INFO L137 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2021-11-20 07:00:50,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:00:50,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:00:50,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:00:50,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:00:50,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:00:50,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:00:50,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:00:50,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:00:50,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (1/1) ... [2021-11-20 07:00:50,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:00:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:50,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:00:50,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:00:50,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:00:50,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:00:50,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:00:50,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:00:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 07:00:50,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 07:00:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 07:00:50,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 07:00:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:00:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 07:00:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 07:00:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:00:50,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:00:50,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:00:50,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:00:50,883 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 07:00:50,974 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:00:50,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:00:51,293 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:00:51,412 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:00:51,413 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 07:00:51,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:51 BoogieIcfgContainer [2021-11-20 07:00:51,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:00:51,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:00:51,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:00:51,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:00:51,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:00:50" (1/3) ... [2021-11-20 07:00:51,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe9e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:00:51, skipping insertion in model container [2021-11-20 07:00:51,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:50" (2/3) ... [2021-11-20 07:00:51,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe9e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:00:51, skipping insertion in model container [2021-11-20 07:00:51,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:51" (3/3) ... [2021-11-20 07:00:51,438 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2021-11-20 07:00:51,447 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 07:00:51,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:00:51,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:00:51,448 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 07:00:51,501 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,501 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,502 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,502 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,502 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,503 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,503 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,512 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,512 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,512 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,513 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,513 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,513 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,513 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,513 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,529 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,544 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:00:51,555 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-20 07:00:51,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:00:51,615 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-11-20 07:00:51,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 07:00:51,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 119 transitions, 254 flow [2021-11-20 07:00:51,698 INFO L129 PetriNetUnfolder]: 9/117 cut-off events. [2021-11-20 07:00:51,698 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 07:00:51,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 117 events. 9/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2021-11-20 07:00:51,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 119 transitions, 254 flow [2021-11-20 07:00:51,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 108 transitions, 228 flow [2021-11-20 07:00:51,742 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2021-11-20 07:00:51,742 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 07:00:51,743 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:51,743 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:51,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:51,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1888672242, now seen corresponding path program 1 times [2021-11-20 07:00:51,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:51,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453986760] [2021-11-20 07:00:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:51,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:52,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:52,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453986760] [2021-11-20 07:00:52,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453986760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:52,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:52,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:00:52,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809388018] [2021-11-20 07:00:52,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:52,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:00:52,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:52,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:00:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:00:52,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2021-11-20 07:00:52,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:52,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:52,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2021-11-20 07:00:52,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:52,554 INFO L129 PetriNetUnfolder]: 26/185 cut-off events. [2021-11-20 07:00:52,554 INFO L130 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2021-11-20 07:00:52,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 185 events. 26/185 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 447 event pairs, 6 based on Foata normal form. 22/193 useless extension candidates. Maximal degree in co-relation 122. Up to 39 conditions per place. [2021-11-20 07:00:52,561 INFO L132 encePairwiseOnDemand]: 104/119 looper letters, 24 selfloop transitions, 3 changer transitions 8/113 dead transitions. [2021-11-20 07:00:52,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 113 transitions, 317 flow [2021-11-20 07:00:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:00:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 07:00:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 661 transitions. [2021-11-20 07:00:52,595 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7935174069627852 [2021-11-20 07:00:52,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 661 transitions. [2021-11-20 07:00:52,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 661 transitions. [2021-11-20 07:00:52,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:52,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 661 transitions. [2021-11-20 07:00:52,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.42857142857143) internal successors, (661), 7 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:52,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:52,629 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:52,632 INFO L186 Difference]: Start difference. First operand has 106 places, 108 transitions, 228 flow. Second operand 7 states and 661 transitions. [2021-11-20 07:00:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 113 transitions, 317 flow [2021-11-20 07:00:52,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 303 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 07:00:52,649 INFO L242 Difference]: Finished difference. Result has 111 places, 101 transitions, 225 flow [2021-11-20 07:00:52,651 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2021-11-20 07:00:52,656 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 5 predicate places. [2021-11-20 07:00:52,656 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 225 flow [2021-11-20 07:00:52,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:52,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:52,658 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:52,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:00:52,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:52,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 397909448, now seen corresponding path program 1 times [2021-11-20 07:00:52,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:52,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188591668] [2021-11-20 07:00:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:52,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:52,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:52,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188591668] [2021-11-20 07:00:52,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188591668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:52,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:52,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:52,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901923464] [2021-11-20 07:00:52,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:52,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:52,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:52,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:52,938 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-11-20 07:00:52,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:52,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:52,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-11-20 07:00:52,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:53,148 INFO L129 PetriNetUnfolder]: 95/406 cut-off events. [2021-11-20 07:00:53,149 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-11-20 07:00:53,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 406 events. 95/406 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1804 event pairs, 42 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 654. Up to 136 conditions per place. [2021-11-20 07:00:53,155 INFO L132 encePairwiseOnDemand]: 110/119 looper letters, 37 selfloop transitions, 8 changer transitions 0/119 dead transitions. [2021-11-20 07:00:53,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 119 transitions, 356 flow [2021-11-20 07:00:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:00:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-20 07:00:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 726 transitions. [2021-11-20 07:00:53,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626050420168067 [2021-11-20 07:00:53,159 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 726 transitions. [2021-11-20 07:00:53,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 726 transitions. [2021-11-20 07:00:53,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:53,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 726 transitions. [2021-11-20 07:00:53,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.75) internal successors, (726), 8 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,204 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,204 INFO L186 Difference]: Start difference. First operand has 111 places, 101 transitions, 225 flow. Second operand 8 states and 726 transitions. [2021-11-20 07:00:53,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 119 transitions, 356 flow [2021-11-20 07:00:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 119 transitions, 349 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-20 07:00:53,210 INFO L242 Difference]: Finished difference. Result has 111 places, 104 transitions, 254 flow [2021-11-20 07:00:53,210 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=254, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2021-11-20 07:00:53,211 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 5 predicate places. [2021-11-20 07:00:53,211 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 254 flow [2021-11-20 07:00:53,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,212 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:53,212 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:53,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:00:53,213 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1293595690, now seen corresponding path program 1 times [2021-11-20 07:00:53,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:53,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828078514] [2021-11-20 07:00:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:53,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:53,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:53,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828078514] [2021-11-20 07:00:53,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828078514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:53,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:53,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:53,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067808350] [2021-11-20 07:00:53,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:53,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:53,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:53,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:53,336 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-11-20 07:00:53,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:53,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-11-20 07:00:53,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:53,553 INFO L129 PetriNetUnfolder]: 81/328 cut-off events. [2021-11-20 07:00:53,553 INFO L130 PetriNetUnfolder]: For 48/51 co-relation queries the response was YES. [2021-11-20 07:00:53,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 328 events. 81/328 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1272 event pairs, 47 based on Foata normal form. 3/306 useless extension candidates. Maximal degree in co-relation 422. Up to 144 conditions per place. [2021-11-20 07:00:53,560 INFO L132 encePairwiseOnDemand]: 110/119 looper letters, 25 selfloop transitions, 6 changer transitions 11/116 dead transitions. [2021-11-20 07:00:53,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 116 transitions, 365 flow [2021-11-20 07:00:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:00:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-20 07:00:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 722 transitions. [2021-11-20 07:00:53,564 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584033613445378 [2021-11-20 07:00:53,564 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 722 transitions. [2021-11-20 07:00:53,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 722 transitions. [2021-11-20 07:00:53,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:53,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 722 transitions. [2021-11-20 07:00:53,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.25) internal successors, (722), 8 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,573 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,574 INFO L186 Difference]: Start difference. First operand has 111 places, 104 transitions, 254 flow. Second operand 8 states and 722 transitions. [2021-11-20 07:00:53,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 116 transitions, 365 flow [2021-11-20 07:00:53,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 355 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 07:00:53,584 INFO L242 Difference]: Finished difference. Result has 116 places, 102 transitions, 248 flow [2021-11-20 07:00:53,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=248, PETRI_PLACES=116, PETRI_TRANSITIONS=102} [2021-11-20 07:00:53,587 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 10 predicate places. [2021-11-20 07:00:53,587 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 102 transitions, 248 flow [2021-11-20 07:00:53,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:53,588 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:53,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:00:53,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:53,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:53,589 INFO L85 PathProgramCache]: Analyzing trace with hash -63413436, now seen corresponding path program 1 times [2021-11-20 07:00:53,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:53,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015823282] [2021-11-20 07:00:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:53,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:53,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:53,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015823282] [2021-11-20 07:00:53,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015823282] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:00:53,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050552014] [2021-11-20 07:00:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:53,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:53,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:53,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:00:53,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:00:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:53,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:00:53,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:00:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:54,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:00:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:54,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050552014] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:00:54,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:00:54,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-11-20 07:00:54,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220567565] [2021-11-20 07:00:54,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:54,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:54,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:54,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-11-20 07:00:54,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 102 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:54,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:54,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-11-20 07:00:54,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:54,834 INFO L129 PetriNetUnfolder]: 70/263 cut-off events. [2021-11-20 07:00:54,835 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2021-11-20 07:00:54,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 263 events. 70/263 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 858 event pairs, 17 based on Foata normal form. 9/265 useless extension candidates. Maximal degree in co-relation 420. Up to 79 conditions per place. [2021-11-20 07:00:54,840 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 27 selfloop transitions, 7 changer transitions 0/108 dead transitions. [2021-11-20 07:00:54,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 108 transitions, 333 flow [2021-11-20 07:00:54,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:00:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 07:00:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2021-11-20 07:00:54,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2021-11-20 07:00:54,844 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2021-11-20 07:00:54,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2021-11-20 07:00:54,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:54,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2021-11-20 07:00:54,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:54,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:54,854 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:54,855 INFO L186 Difference]: Start difference. First operand has 116 places, 102 transitions, 248 flow. Second operand 7 states and 629 transitions. [2021-11-20 07:00:54,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 108 transitions, 333 flow [2021-11-20 07:00:54,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 307 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-11-20 07:00:54,865 INFO L242 Difference]: Finished difference. Result has 112 places, 104 transitions, 259 flow [2021-11-20 07:00:54,865 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2021-11-20 07:00:54,869 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 6 predicate places. [2021-11-20 07:00:54,869 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 259 flow [2021-11-20 07:00:54,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:54,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:54,870 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:54,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:00:55,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:55,097 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1317879854, now seen corresponding path program 1 times [2021-11-20 07:00:55,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:55,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016064677] [2021-11-20 07:00:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:55,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:55,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:55,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016064677] [2021-11-20 07:00:55,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016064677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:00:55,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387720641] [2021-11-20 07:00:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:55,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:55,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:55,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:00:55,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:00:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:55,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:00:55,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:00:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:55,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:00:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:55,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387720641] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:00:55,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:00:55,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-11-20 07:00:55,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490989005] [2021-11-20 07:00:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:55,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:55,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:55,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:55,890 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-11-20 07:00:55,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 259 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:55,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:55,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-11-20 07:00:55,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:56,030 INFO L129 PetriNetUnfolder]: 59/261 cut-off events. [2021-11-20 07:00:56,030 INFO L130 PetriNetUnfolder]: For 76/90 co-relation queries the response was YES. [2021-11-20 07:00:56,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 261 events. 59/261 cut-off events. For 76/90 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 783 event pairs, 20 based on Foata normal form. 14/262 useless extension candidates. Maximal degree in co-relation 418. Up to 67 conditions per place. [2021-11-20 07:00:56,034 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 29 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2021-11-20 07:00:56,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 110 transitions, 352 flow [2021-11-20 07:00:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:00:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-20 07:00:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2021-11-20 07:00:56,042 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2021-11-20 07:00:56,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2021-11-20 07:00:56,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2021-11-20 07:00:56,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:56,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2021-11-20 07:00:56,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:56,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:56,052 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:56,052 INFO L186 Difference]: Start difference. First operand has 112 places, 104 transitions, 259 flow. Second operand 7 states and 629 transitions. [2021-11-20 07:00:56,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 110 transitions, 352 flow [2021-11-20 07:00:56,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 07:00:56,059 INFO L242 Difference]: Finished difference. Result has 116 places, 105 transitions, 278 flow [2021-11-20 07:00:56,059 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=116, PETRI_TRANSITIONS=105} [2021-11-20 07:00:56,062 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 10 predicate places. [2021-11-20 07:00:56,062 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 105 transitions, 278 flow [2021-11-20 07:00:56,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:56,063 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:56,063 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:00:56,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:00:56,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:56,277 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash -622709836, now seen corresponding path program 1 times [2021-11-20 07:00:56,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:56,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364949277] [2021-11-20 07:00:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:56,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:56,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:56,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364949277] [2021-11-20 07:00:56,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364949277] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:00:56,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598376855] [2021-11-20 07:00:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:56,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:00:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:56,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:00:56,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:00:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:56,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-20 07:00:56,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:00:56,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:00:57,179 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:00:57,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 07:00:57,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 07:00:57,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 07:00:57,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 07:00:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:58,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:00:59,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-20 07:00:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:00:59,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598376855] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:00:59,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:00:59,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 11] total 33 [2021-11-20 07:00:59,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986413037] [2021-11-20 07:00:59,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:00:59,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-20 07:00:59,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:59,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-20 07:00:59,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 07:00:59,236 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 119 [2021-11-20 07:00:59,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 105 transitions, 278 flow. Second operand has 33 states, 33 states have (on average 49.06060606060606) internal successors, (1619), 33 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:59,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:59,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 119 [2021-11-20 07:00:59,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:01,331 INFO L129 PetriNetUnfolder]: 749/1618 cut-off events. [2021-11-20 07:01:01,331 INFO L130 PetriNetUnfolder]: For 951/951 co-relation queries the response was YES. [2021-11-20 07:01:01,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 1618 events. 749/1618 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9853 event pairs, 75 based on Foata normal form. 1/1612 useless extension candidates. Maximal degree in co-relation 3780. Up to 473 conditions per place. [2021-11-20 07:01:01,352 INFO L132 encePairwiseOnDemand]: 94/119 looper letters, 170 selfloop transitions, 66 changer transitions 5/280 dead transitions. [2021-11-20 07:01:01,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 280 transitions, 1336 flow [2021-11-20 07:01:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:01:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 07:01:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1905 transitions. [2021-11-20 07:01:01,363 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.43265955030660913 [2021-11-20 07:01:01,363 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1905 transitions. [2021-11-20 07:01:01,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1905 transitions. [2021-11-20 07:01:01,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:01,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1905 transitions. [2021-11-20 07:01:01,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 51.486486486486484) internal successors, (1905), 37 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:01,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 119.0) internal successors, (4522), 38 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:01,417 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 119.0) internal successors, (4522), 38 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:01,417 INFO L186 Difference]: Start difference. First operand has 116 places, 105 transitions, 278 flow. Second operand 37 states and 1905 transitions. [2021-11-20 07:01:01,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 280 transitions, 1336 flow [2021-11-20 07:01:01,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 280 transitions, 1305 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-20 07:01:01,431 INFO L242 Difference]: Finished difference. Result has 156 places, 166 transitions, 721 flow [2021-11-20 07:01:01,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=721, PETRI_PLACES=156, PETRI_TRANSITIONS=166} [2021-11-20 07:01:01,433 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 50 predicate places. [2021-11-20 07:01:01,433 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 166 transitions, 721 flow [2021-11-20 07:01:01,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 49.06060606060606) internal successors, (1619), 33 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:01,435 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:01,435 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:01,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:01:01,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 07:01:01,661 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2137444122, now seen corresponding path program 2 times [2021-11-20 07:01:01,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:01,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689856865] [2021-11-20 07:01:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:01,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:01:02,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:02,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689856865] [2021-11-20 07:01:02,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689856865] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:01:02,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022294624] [2021-11-20 07:01:02,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:01:02,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:01:02,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:01:02,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:01:02,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:01:02,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:01:02,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:01:02,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-20 07:01:02,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:01:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:01:02,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:01:03,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:01:03,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 18 [2021-11-20 07:01:03,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:01:03,230 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:01:03,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2021-11-20 07:01:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:01:03,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022294624] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:01:03,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:01:03,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 10] total 23 [2021-11-20 07:01:03,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068931328] [2021-11-20 07:01:03,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:01:03,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 07:01:03,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 07:01:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:01:03,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 119 [2021-11-20 07:01:03,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 166 transitions, 721 flow. Second operand has 23 states, 23 states have (on average 63.56521739130435) internal successors, (1462), 23 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:03,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:03,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 119 [2021-11-20 07:01:03,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:05,720 INFO L129 PetriNetUnfolder]: 1506/3217 cut-off events. [2021-11-20 07:01:05,720 INFO L130 PetriNetUnfolder]: For 5150/5154 co-relation queries the response was YES. [2021-11-20 07:01:05,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9451 conditions, 3217 events. 1506/3217 cut-off events. For 5150/5154 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23921 event pairs, 108 based on Foata normal form. 7/3215 useless extension candidates. Maximal degree in co-relation 9407. Up to 648 conditions per place. [2021-11-20 07:01:05,767 INFO L132 encePairwiseOnDemand]: 99/119 looper letters, 236 selfloop transitions, 130 changer transitions 8/426 dead transitions. [2021-11-20 07:01:05,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 426 transitions, 2711 flow [2021-11-20 07:01:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 07:01:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-11-20 07:01:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2890 transitions. [2021-11-20 07:01:05,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5647840531561462 [2021-11-20 07:01:05,782 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2890 transitions. [2021-11-20 07:01:05,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2890 transitions. [2021-11-20 07:01:05,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:05,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2890 transitions. [2021-11-20 07:01:05,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 67.20930232558139) internal successors, (2890), 43 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:05,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 119.0) internal successors, (5236), 44 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:05,813 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 119.0) internal successors, (5236), 44 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:05,814 INFO L186 Difference]: Start difference. First operand has 156 places, 166 transitions, 721 flow. Second operand 43 states and 2890 transitions. [2021-11-20 07:01:05,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 426 transitions, 2711 flow [2021-11-20 07:01:05,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 426 transitions, 2549 flow, removed 60 selfloop flow, removed 14 redundant places. [2021-11-20 07:01:05,858 INFO L242 Difference]: Finished difference. Result has 194 places, 262 transitions, 1640 flow [2021-11-20 07:01:05,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1640, PETRI_PLACES=194, PETRI_TRANSITIONS=262} [2021-11-20 07:01:05,859 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 88 predicate places. [2021-11-20 07:01:05,859 INFO L470 AbstractCegarLoop]: Abstraction has has 194 places, 262 transitions, 1640 flow [2021-11-20 07:01:05,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 63.56521739130435) internal successors, (1462), 23 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:05,861 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:05,861 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:05,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:01:06,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:01:06,085 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:06,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1662417600, now seen corresponding path program 3 times [2021-11-20 07:01:06,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:06,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270791940] [2021-11-20 07:01:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:06,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:01:06,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270791940] [2021-11-20 07:01:06,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270791940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:01:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615043114] [2021-11-20 07:01:06,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:01:06,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:01:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:01:06,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:01:06,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:01:06,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 07:01:06,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:01:06,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-20 07:01:06,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:01:07,417 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 07:01:07,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-20 07:01:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:01:07,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:01:08,967 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~pre11#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int)) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre11#1|)) c_~A~0.base) c_~A~0.offset) c_~counter~0)) (forall ((|ULTIMATE.start_main_#t~pre11#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int)) (<= c_~counter~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre11#1|)) c_~A~0.base) c_~A~0.offset)))) is different from false [2021-11-20 07:01:09,982 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~pre11#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int)) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre11#1|)) c_~A~0.base) c_~A~0.offset) |c_thread1Thread1of1ForFork0_~tmp~0#1|)) (forall ((|ULTIMATE.start_main_#t~pre11#1| Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int)) (<= |c_thread1Thread1of1ForFork0_~tmp~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |ULTIMATE.start_main_#t~pre11#1|)) c_~A~0.base) c_~A~0.offset)))) is different from false [2021-11-20 07:01:09,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:01:09,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 40 [2021-11-20 07:01:10,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:01:10,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:01:10,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2021-11-20 07:01:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:01:10,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615043114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:01:10,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:01:10,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 40 [2021-11-20 07:01:10,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21598934] [2021-11-20 07:01:10,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:01:10,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-20 07:01:10,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-20 07:01:10,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1279, Unknown=2, NotChecked=146, Total=1560 [2021-11-20 07:01:10,959 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 119 [2021-11-20 07:01:10,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 262 transitions, 1640 flow. Second operand has 40 states, 40 states have (on average 54.025) internal successors, (2161), 40 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:10,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:10,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 119 [2021-11-20 07:01:10,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:14,311 INFO L129 PetriNetUnfolder]: 2212/4661 cut-off events. [2021-11-20 07:01:14,311 INFO L130 PetriNetUnfolder]: For 12559/12571 co-relation queries the response was YES. [2021-11-20 07:01:14,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15490 conditions, 4661 events. 2212/4661 cut-off events. For 12559/12571 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37804 event pairs, 84 based on Foata normal form. 12/4662 useless extension candidates. Maximal degree in co-relation 15413. Up to 1056 conditions per place. [2021-11-20 07:01:14,378 INFO L132 encePairwiseOnDemand]: 99/119 looper letters, 264 selfloop transitions, 183 changer transitions 8/501 dead transitions. [2021-11-20 07:01:14,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 501 transitions, 3899 flow [2021-11-20 07:01:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 07:01:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-11-20 07:01:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2558 transitions. [2021-11-20 07:01:14,389 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4885408708938121 [2021-11-20 07:01:14,389 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2558 transitions. [2021-11-20 07:01:14,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2558 transitions. [2021-11-20 07:01:14,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:14,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2558 transitions. [2021-11-20 07:01:14,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 58.13636363636363) internal successors, (2558), 44 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:14,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 119.0) internal successors, (5355), 45 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:14,419 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 119.0) internal successors, (5355), 45 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:14,419 INFO L186 Difference]: Start difference. First operand has 194 places, 262 transitions, 1640 flow. Second operand 44 states and 2558 transitions. [2021-11-20 07:01:14,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 501 transitions, 3899 flow [2021-11-20 07:01:14,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 501 transitions, 3615 flow, removed 125 selfloop flow, removed 14 redundant places. [2021-11-20 07:01:14,597 INFO L242 Difference]: Finished difference. Result has 230 places, 337 transitions, 2585 flow [2021-11-20 07:01:14,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2585, PETRI_PLACES=230, PETRI_TRANSITIONS=337} [2021-11-20 07:01:14,599 INFO L334 CegarLoopForPetriNet]: 106 programPoint places, 124 predicate places. [2021-11-20 07:01:14,599 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 337 transitions, 2585 flow [2021-11-20 07:01:14,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 54.025) internal successors, (2161), 40 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:14,601 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:14,602 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:14,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 07:01:14,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:01:14,816 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:14,817 INFO L85 PathProgramCache]: Analyzing trace with hash 237501406, now seen corresponding path program 4 times [2021-11-20 07:01:14,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:14,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665010431] [2021-11-20 07:01:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:14,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:01:14,854 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:01:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:01:14,931 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:01:14,932 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 07:01:14,933 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-20 07:01:14,936 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-20 07:01:14,936 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-20 07:01:14,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:01:14,941 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2021-11-20 07:01:14,947 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 07:01:14,948 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:01:15,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:01:15 BasicIcfg [2021-11-20 07:01:15,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:01:15,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:01:15,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:01:15,093 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:01:15,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:51" (3/4) ... [2021-11-20 07:01:15,097 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 07:01:15,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbc6de5a-b557-40a2-b6ac-95760be98e98/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:01:15,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:01:15,193 INFO L158 Benchmark]: Toolchain (without parser) took 25023.30ms. Allocated memory was 94.4MB in the beginning and 257.9MB in the end (delta: 163.6MB). Free memory was 59.1MB in the beginning and 112.5MB in the end (delta: -53.4MB). Peak memory consumption was 110.2MB. Max. memory is 16.1GB. [2021-11-20 07:01:15,194 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 67.1MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:01:15,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.54ms. Allocated memory was 94.4MB in the beginning and 132.1MB in the end (delta: 37.7MB). Free memory was 58.9MB in the beginning and 105.0MB in the end (delta: -46.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:01:15,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.46ms. Allocated memory is still 132.1MB. Free memory was 105.0MB in the beginning and 103.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:01:15,196 INFO L158 Benchmark]: Boogie Preprocessor took 73.51ms. Allocated memory is still 132.1MB. Free memory was 103.0MB in the beginning and 101.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:01:15,196 INFO L158 Benchmark]: RCFGBuilder took 629.95ms. Allocated memory is still 132.1MB. Free memory was 101.4MB in the beginning and 81.2MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-20 07:01:15,197 INFO L158 Benchmark]: TraceAbstraction took 23673.82ms. Allocated memory was 132.1MB in the beginning and 257.9MB in the end (delta: 125.8MB). Free memory was 80.4MB in the beginning and 130.3MB in the end (delta: -49.9MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2021-11-20 07:01:15,197 INFO L158 Benchmark]: Witness Printer took 100.29ms. Allocated memory is still 257.9MB. Free memory was 130.3MB in the beginning and 112.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-20 07:01:15,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 67.1MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.54ms. Allocated memory was 94.4MB in the beginning and 132.1MB in the end (delta: 37.7MB). Free memory was 58.9MB in the beginning and 105.0MB in the end (delta: -46.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.46ms. Allocated memory is still 132.1MB. Free memory was 105.0MB in the beginning and 103.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.51ms. Allocated memory is still 132.1MB. Free memory was 103.0MB in the beginning and 101.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 629.95ms. Allocated memory is still 132.1MB. Free memory was 101.4MB in the beginning and 81.2MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 23673.82ms. Allocated memory was 132.1MB in the beginning and 257.9MB in the end (delta: 125.8MB). Free memory was 80.4MB in the beginning and 130.3MB in the end (delta: -49.9MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. * Witness Printer took 100.29ms. Allocated memory is still 257.9MB. Free memory was 130.3MB in the beginning and 112.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 87]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L41] 0 int* A; VAL [A={0:0}] [L42] 0 int counter, N; VAL [A={0:0}, counter=0, N=0] [L75] 0 pthread_t t1, t2; VAL [A={0:0}, counter=0, N=0, t1={6:0}, t2={5:0}] [L77] 0 N = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, A={0:0}, counter=0, N=1, t1={6:0}, t2={5:0}] [L78] CALL, EXPR 0 create_fresh_int_array(N) [L93] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) VAL [\old(cond)=1, A={0:0}, cond=1, counter=0, N=1] [L93] RET 0 assume_abort_if_not(size >= 0) [L94] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) VAL [\old(cond)=1, A={0:0}, cond=1, counter=0, N=1] [L94] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); VAL [\old(size)=1, A={0:0}, arr={3:0}, counter=0, malloc(sizeof(int) * (size_t)size)={3:0}, N=1, size=1] [L97] 0 int i = 0; VAL [\old(size)=1, A={0:0}, arr={3:0}, counter=0, i=0, N=1, size=1] [L97] COND TRUE 0 i < size VAL [\old(size)=1, A={0:0}, arr={3:0}, counter=0, i=0, N=1, size=1] [L98] 0 arr[i] = __VERIFIER_nondet_int() VAL [\old(size)=1, __VERIFIER_nondet_int()=-4, A={0:0}, arr={3:0}, counter=0, i=0, N=1, size=1] [L97] 0 i++ VAL [\old(size)=1, A={0:0}, arr={3:0}, counter=0, i=1, N=1, size=1] [L97] COND FALSE 0 !(i < size) VAL [\old(size)=1, A={0:0}, arr={3:0}, counter=0, i=1, N=1, size=1] [L100] 0 return arr; VAL [\old(size)=1, \result={3:0}, A={0:0}, arr={3:0}, counter=0, i=1, N=1, size=1] [L78] RET, EXPR 0 create_fresh_int_array(N) [L78] 0 A = create_fresh_int_array(N) VAL [A={3:0}, counter=0, create_fresh_int_array(N)={3:0}, N=1, t1={6:0}, t2={5:0}] [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={3:0}, counter=0, N=1, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={5:0}] [L49] 1 int i=0; VAL [A={3:0}, counter=0, i=0, N=1] [L49] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L38] COND FALSE 1 !(!cond) [L110] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L111] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 1 !(!cond) [L111] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L112] 1 return a + b; [L51] RET, EXPR 1 plus(counter, A[i]) [L51] 1 int tmp = plus(counter, A[i]); [L82] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={3:0}, counter=0, N=1, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={5:0}] [L83] 0 \read(t1) VAL [\read(t1)=-2, A={3:0}, counter=0, N=1, t1={6:0}, t2={5:0}] [L62] 2 int i=0; VAL [A={3:0}, counter=0, i=0, N=1] [L62] COND TRUE 2 i= b - 2147483648) [L38] COND FALSE 2 !(!cond) [L104] RET 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L105] CALL 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L38] COND FALSE 2 !(!cond) [L105] RET 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L106] 2 return a - b; [L64] RET, EXPR 2 minus(counter, A[i]) [L64] 2 int tmp = minus(counter, A[i]); [L67] 2 counter = tmp VAL [A={3:0}, counter=4, i=0, N=1, tmp=4] [L62] 2 i++ VAL [A={3:0}, counter=4, i=1, N=1, tmp=4] [L62] COND FALSE 2 !(i