./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN --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 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:58:55,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:58:55,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:58:55,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:58:55,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:58:55,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:58:55,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:58:55,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:58:55,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:58:55,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:58:55,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:58:55,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:58:55,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:58:55,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:58:55,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:58:55,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:58:55,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:58:55,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:58:55,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:58:55,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:58:55,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:58:55,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:58:55,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:58:55,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:58:55,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:58:55,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:58:55,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:58:55,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:58:55,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:58:55,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:58:55,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:58:55,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:58:55,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:58:55,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:58:55,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:58:55,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:58:55,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:58:55,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:58:55,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:58:55,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:58:55,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:58:55,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:58:55,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:58:55,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:58:55,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:58:55,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:58:55,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:58:55,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:58:55,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:58:55,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:58:55,787 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:58:55,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:58:55,788 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:58:55,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:58:55,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:58:55,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:58:55,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:58:55,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:58:55,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:58:55,790 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:58:55,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:58:55,790 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:58:55,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:58:55,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:58:55,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:58:55,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:58:55,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:55,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:58:55,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:58:55,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:58:55,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:58:55,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:58:55,793 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:58:55,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:58:55,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:58:55,793 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_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 [2022-11-20 11:58:56,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:58:56,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:58:56,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:58:56,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:58:56,110 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:58:56,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-20 11:58:59,289 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:58:59,551 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:58:59,551 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-20 11:58:59,560 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/data/368261ce1/6611e44e47c04881bee33a2e63fa8085/FLAG0bf81650c [2022-11-20 11:58:59,577 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/data/368261ce1/6611e44e47c04881bee33a2e63fa8085 [2022-11-20 11:58:59,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:58:59,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:58:59,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:59,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:58:59,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:58:59,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:58:59,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66568bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59, skipping insertion in model container [2022-11-20 11:58:59,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:58:59,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:58:59,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:58:59,843 WARN L237 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_69c96ad2-4436-4e75-b1dc-26d3e119c34c/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-20 11:58:59,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:59,868 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:58:59,916 WARN L237 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_69c96ad2-4436-4e75-b1dc-26d3e119c34c/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-20 11:58:59,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:59,940 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:58:59,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59 WrapperNode [2022-11-20 11:58:59,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:59,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:58:59,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:58:59,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:58:59,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:58:59,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:58:59,995 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 275 [2022-11-20 11:58:59,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:58:59,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:58:59,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:58:59,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:59:00,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:59:00,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:59:00,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:59:00,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:59:00,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:59:00,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:00,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:00,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:59:00,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:59:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:59:00,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:59:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:59:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:59:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:59:00,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:59:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:59:00,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:59:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:59:00,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:59:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:59:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:59:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:59:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:59:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:59:00,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:59:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:59:00,161 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:59:00,403 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:59:00,405 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:59:00,977 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:59:01,156 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:59:01,157 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 11:59:01,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:01 BoogieIcfgContainer [2022-11-20 11:59:01,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:59:01,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:59:01,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:59:01,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:59:01,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:58:59" (1/3) ... [2022-11-20 11:59:01,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d8a22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:01, skipping insertion in model container [2022-11-20 11:59:01,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59" (2/3) ... [2022-11-20 11:59:01,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d8a22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:01, skipping insertion in model container [2022-11-20 11:59:01,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:01" (3/3) ... [2022-11-20 11:59:01,172 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2022-11-20 11:59:01,181 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:59:01,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:59:01,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:59:01,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:59:01,369 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:59:01,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 257 transitions, 538 flow [2022-11-20 11:59:01,544 INFO L130 PetriNetUnfolder]: 25/254 cut-off events. [2022-11-20 11:59:01,545 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:59:01,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 25/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 324 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-20 11:59:01,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 257 transitions, 538 flow [2022-11-20 11:59:01,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 504 flow [2022-11-20 11:59:01,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:59:01,591 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31e9386c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:59:01,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 11:59:01,681 INFO L130 PetriNetUnfolder]: 25/242 cut-off events. [2022-11-20 11:59:01,681 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:59:01,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:01,683 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:01,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:01,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1455593789, now seen corresponding path program 1 times [2022-11-20 11:59:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:01,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656197020] [2022-11-20 11:59:01,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:01,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:02,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:02,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656197020] [2022-11-20 11:59:02,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656197020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:02,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:02,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:59:02,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568402330] [2022-11-20 11:59:02,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:02,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:59:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:59:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:59:02,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 257 [2022-11-20 11:59:02,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 243 transitions, 504 flow. Second operand has 2 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:02,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 257 [2022-11-20 11:59:02,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:02,331 INFO L130 PetriNetUnfolder]: 31/379 cut-off events. [2022-11-20 11:59:02,332 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-20 11:59:02,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 379 events. 31/379 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1231 event pairs, 15 based on Foata normal form. 64/407 useless extension candidates. Maximal degree in co-relation 267. Up to 37 conditions per place. [2022-11-20 11:59:02,344 INFO L137 encePairwiseOnDemand]: 240/257 looper letters, 9 selfloop transitions, 0 changer transitions 6/226 dead transitions. [2022-11-20 11:59:02,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 226 transitions, 488 flow [2022-11-20 11:59:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:59:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:59:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 486 transitions. [2022-11-20 11:59:02,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9455252918287937 [2022-11-20 11:59:02,372 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 486 transitions. [2022-11-20 11:59:02,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 486 transitions. [2022-11-20 11:59:02,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:02,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 486 transitions. [2022-11-20 11:59:02,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,399 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,401 INFO L175 Difference]: Start difference. First operand has 228 places, 243 transitions, 504 flow. Second operand 2 states and 486 transitions. [2022-11-20 11:59:02,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 226 transitions, 488 flow [2022-11-20 11:59:02,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 476 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:59:02,414 INFO L231 Difference]: Finished difference. Result has 223 places, 220 transitions, 446 flow [2022-11-20 11:59:02,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=446, PETRI_PLACES=223, PETRI_TRANSITIONS=220} [2022-11-20 11:59:02,425 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -5 predicate places. [2022-11-20 11:59:02,426 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 220 transitions, 446 flow [2022-11-20 11:59:02,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:02,428 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:02,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:59:02,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1252520012, now seen corresponding path program 1 times [2022-11-20 11:59:02,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:02,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956316737] [2022-11-20 11:59:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:02,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:03,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:03,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956316737] [2022-11-20 11:59:03,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956316737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:03,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:03,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:59:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989427574] [2022-11-20 11:59:03,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:03,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:59:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:59:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:03,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 257 [2022-11-20 11:59:03,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 220 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:03,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:03,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 257 [2022-11-20 11:59:03,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:04,165 INFO L130 PetriNetUnfolder]: 324/1335 cut-off events. [2022-11-20 11:59:04,166 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-20 11:59:04,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 1335 events. 324/1335 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8358 event pairs, 167 based on Foata normal form. 1/1076 useless extension candidates. Maximal degree in co-relation 1821. Up to 418 conditions per place. [2022-11-20 11:59:04,182 INFO L137 encePairwiseOnDemand]: 245/257 looper letters, 60 selfloop transitions, 8 changer transitions 22/246 dead transitions. [2022-11-20 11:59:04,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 246 transitions, 678 flow [2022-11-20 11:59:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:59:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:59:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1950 transitions. [2022-11-20 11:59:04,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6897771489211177 [2022-11-20 11:59:04,190 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1950 transitions. [2022-11-20 11:59:04,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1950 transitions. [2022-11-20 11:59:04,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:04,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1950 transitions. [2022-11-20 11:59:04,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 177.27272727272728) internal successors, (1950), 11 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:04,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:04,209 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:04,210 INFO L175 Difference]: Start difference. First operand has 223 places, 220 transitions, 446 flow. Second operand 11 states and 1950 transitions. [2022-11-20 11:59:04,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 246 transitions, 678 flow [2022-11-20 11:59:04,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 246 transitions, 678 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:59:04,223 INFO L231 Difference]: Finished difference. Result has 231 places, 221 transitions, 478 flow [2022-11-20 11:59:04,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=231, PETRI_TRANSITIONS=221} [2022-11-20 11:59:04,225 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 3 predicate places. [2022-11-20 11:59:04,226 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 221 transitions, 478 flow [2022-11-20 11:59:04,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:04,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:04,228 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:04,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:59:04,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:04,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1252444629, now seen corresponding path program 1 times [2022-11-20 11:59:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:04,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056012626] [2022-11-20 11:59:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:04,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:04,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:04,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056012626] [2022-11-20 11:59:04,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056012626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12119268] [2022-11-20 11:59:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:04,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:04,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:04,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:59:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:04,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:59:04,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:05,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:05,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12119268] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:05,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:59:05,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-20 11:59:05,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913033642] [2022-11-20 11:59:05,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:05,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:59:05,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 257 [2022-11-20 11:59:05,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 221 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:05,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:05,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 257 [2022-11-20 11:59:05,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:05,984 INFO L130 PetriNetUnfolder]: 166/758 cut-off events. [2022-11-20 11:59:05,985 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-20 11:59:05,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 758 events. 166/758 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4189 event pairs, 45 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 1086. Up to 161 conditions per place. [2022-11-20 11:59:05,995 INFO L137 encePairwiseOnDemand]: 249/257 looper letters, 47 selfloop transitions, 7 changer transitions 0/229 dead transitions. [2022-11-20 11:59:05,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 229 transitions, 604 flow [2022-11-20 11:59:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:59:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:59:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1412 transitions. [2022-11-20 11:59:06,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7848804891606448 [2022-11-20 11:59:06,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1412 transitions. [2022-11-20 11:59:06,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1412 transitions. [2022-11-20 11:59:06,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:06,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1412 transitions. [2022-11-20 11:59:06,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.71428571428572) internal successors, (1412), 7 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:06,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:06,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:06,012 INFO L175 Difference]: Start difference. First operand has 231 places, 221 transitions, 478 flow. Second operand 7 states and 1412 transitions. [2022-11-20 11:59:06,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 229 transitions, 604 flow [2022-11-20 11:59:06,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 229 transitions, 582 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-20 11:59:06,021 INFO L231 Difference]: Finished difference. Result has 228 places, 223 transitions, 489 flow [2022-11-20 11:59:06,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=228, PETRI_TRANSITIONS=223} [2022-11-20 11:59:06,028 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 0 predicate places. [2022-11-20 11:59:06,028 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 223 transitions, 489 flow [2022-11-20 11:59:06,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:06,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:06,030 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:06,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:06,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:06,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash -46194501, now seen corresponding path program 1 times [2022-11-20 11:59:06,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:06,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839787037] [2022-11-20 11:59:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:06,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:06,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839787037] [2022-11-20 11:59:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839787037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036855985] [2022-11-20 11:59:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:06,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:06,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:06,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:59:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:59:06,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:07,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:07,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036855985] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:07,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:59:07,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-20 11:59:07,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38831809] [2022-11-20 11:59:07,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:07,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:59:07,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:07,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:59:07,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:59:07,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 257 [2022-11-20 11:59:07,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 223 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 189.11111111111111) internal successors, (1702), 9 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:07,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:07,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 257 [2022-11-20 11:59:07,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:08,404 INFO L130 PetriNetUnfolder]: 1013/2871 cut-off events. [2022-11-20 11:59:08,404 INFO L131 PetriNetUnfolder]: For 620/880 co-relation queries the response was YES. [2022-11-20 11:59:08,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2871 events. 1013/2871 cut-off events. For 620/880 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 22363 event pairs, 119 based on Foata normal form. 260/2733 useless extension candidates. Maximal degree in co-relation 4812. Up to 475 conditions per place. [2022-11-20 11:59:08,433 INFO L137 encePairwiseOnDemand]: 245/257 looper letters, 96 selfloop transitions, 19 changer transitions 0/281 dead transitions. [2022-11-20 11:59:08,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 281 transitions, 884 flow [2022-11-20 11:59:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:59:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:59:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2144 transitions. [2022-11-20 11:59:08,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.758401131941988 [2022-11-20 11:59:08,440 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2144 transitions. [2022-11-20 11:59:08,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2144 transitions. [2022-11-20 11:59:08,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:08,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2144 transitions. [2022-11-20 11:59:08,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 194.9090909090909) internal successors, (2144), 11 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:08,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:08,455 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:08,455 INFO L175 Difference]: Start difference. First operand has 228 places, 223 transitions, 489 flow. Second operand 11 states and 2144 transitions. [2022-11-20 11:59:08,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 281 transitions, 884 flow [2022-11-20 11:59:08,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 281 transitions, 871 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:59:08,464 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 588 flow [2022-11-20 11:59:08,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2022-11-20 11:59:08,467 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 12 predicate places. [2022-11-20 11:59:08,467 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 588 flow [2022-11-20 11:59:08,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.11111111111111) internal successors, (1702), 9 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:08,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:08,471 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:08,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:08,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:08,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:08,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:08,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1352532323, now seen corresponding path program 2 times [2022-11-20 11:59:08,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:08,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698223225] [2022-11-20 11:59:08,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:08,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:09,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698223225] [2022-11-20 11:59:09,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698223225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:09,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128413738] [2022-11-20 11:59:09,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:59:09,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:09,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:09,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:09,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:59:09,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:59:09,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:59:09,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:59:09,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:59:09,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:09,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128413738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:09,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:59:09,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-20 11:59:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377381438] [2022-11-20 11:59:09,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:09,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:59:09,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 257 [2022-11-20 11:59:09,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:09,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:09,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 257 [2022-11-20 11:59:09,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:10,296 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][220], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 2191#(= ~res1~0 0), 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 5#L101-4true, 171#L75-4true, 180#thread1ENTRYtrue, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-20 11:59:10,296 INFO L383 tUnfolder$Statistics]: this new event has 169 ancestors and is cut-off event [2022-11-20 11:59:10,297 INFO L386 tUnfolder$Statistics]: existing Event has 160 ancestors and is cut-off event [2022-11-20 11:59:10,297 INFO L386 tUnfolder$Statistics]: existing Event has 153 ancestors and is cut-off event [2022-11-20 11:59:10,297 INFO L386 tUnfolder$Statistics]: existing Event has 153 ancestors and is cut-off event [2022-11-20 11:59:10,366 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][220], [Black: 279#(<= 1 ~N~0), Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), 113#L54true, Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 5#L101-4true, 2148#true, 171#L75-4true, 245#true, Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-20 11:59:10,367 INFO L383 tUnfolder$Statistics]: this new event has 184 ancestors and is cut-off event [2022-11-20 11:59:10,367 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-11-20 11:59:10,367 INFO L386 tUnfolder$Statistics]: existing Event has 175 ancestors and is cut-off event [2022-11-20 11:59:10,368 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-11-20 11:59:10,373 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([915] thread2EXIT-->L103-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem31#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][241], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 1161#(<= 1 ~N~0), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2191#(= ~res1~0 0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 200#L103-2true, 245#true, 19#L80true, 279#(<= 1 ~N~0), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-20 11:59:10,373 INFO L383 tUnfolder$Statistics]: this new event has 192 ancestors and is cut-off event [2022-11-20 11:59:10,374 INFO L386 tUnfolder$Statistics]: existing Event has 183 ancestors and is cut-off event [2022-11-20 11:59:10,374 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-11-20 11:59:10,374 INFO L386 tUnfolder$Statistics]: existing Event has 160 ancestors and is cut-off event [2022-11-20 11:59:10,384 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([915] thread2EXIT-->L103-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem31#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][238], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 1161#(<= 1 ~N~0), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 2148#true, 200#L103-2true, 245#true, 19#L80true, 279#(<= 1 ~N~0), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-20 11:59:10,384 INFO L383 tUnfolder$Statistics]: this new event has 199 ancestors and is cut-off event [2022-11-20 11:59:10,385 INFO L386 tUnfolder$Statistics]: existing Event has 190 ancestors and is cut-off event [2022-11-20 11:59:10,385 INFO L386 tUnfolder$Statistics]: existing Event has 183 ancestors and is cut-off event [2022-11-20 11:59:10,385 INFO L386 tUnfolder$Statistics]: existing Event has 167 ancestors and is cut-off event [2022-11-20 11:59:10,386 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][220], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 2191#(= ~res1~0 0), 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 171#L75-4true, 35#L102-2true, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-20 11:59:10,386 INFO L383 tUnfolder$Statistics]: this new event has 193 ancestors and is cut-off event [2022-11-20 11:59:10,387 INFO L386 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2022-11-20 11:59:10,387 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-11-20 11:59:10,387 INFO L386 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2022-11-20 11:59:10,391 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][220], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 2148#true, 171#L75-4true, 35#L102-2true, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-20 11:59:10,392 INFO L383 tUnfolder$Statistics]: this new event has 200 ancestors and is cut-off event [2022-11-20 11:59:10,392 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-11-20 11:59:10,392 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-11-20 11:59:10,392 INFO L386 tUnfolder$Statistics]: existing Event has 191 ancestors and is cut-off event [2022-11-20 11:59:10,393 INFO L130 PetriNetUnfolder]: 188/1232 cut-off events. [2022-11-20 11:59:10,393 INFO L131 PetriNetUnfolder]: For 208/240 co-relation queries the response was YES. [2022-11-20 11:59:10,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 1232 events. 188/1232 cut-off events. For 208/240 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7294 event pairs, 7 based on Foata normal form. 2/1154 useless extension candidates. Maximal degree in co-relation 1800. Up to 77 conditions per place. [2022-11-20 11:59:10,414 INFO L137 encePairwiseOnDemand]: 249/257 looper letters, 47 selfloop transitions, 6 changer transitions 4/257 dead transitions. [2022-11-20 11:59:10,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 257 transitions, 755 flow [2022-11-20 11:59:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:59:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2022-11-20 11:59:10,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.808041504539559 [2022-11-20 11:59:10,419 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1246 transitions. [2022-11-20 11:59:10,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1246 transitions. [2022-11-20 11:59:10,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:10,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1246 transitions. [2022-11-20 11:59:10,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 257.0) internal successors, (1799), 7 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,428 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 257.0) internal successors, (1799), 7 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,428 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 588 flow. Second operand 6 states and 1246 transitions. [2022-11-20 11:59:10,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 257 transitions, 755 flow [2022-11-20 11:59:10,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 257 transitions, 748 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:59:10,439 INFO L231 Difference]: Finished difference. Result has 244 places, 239 transitions, 617 flow [2022-11-20 11:59:10,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=244, PETRI_TRANSITIONS=239} [2022-11-20 11:59:10,441 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 16 predicate places. [2022-11-20 11:59:10,441 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 239 transitions, 617 flow [2022-11-20 11:59:10,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:10,443 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:10,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:10,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:10,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash 53574630, now seen corresponding path program 1 times [2022-11-20 11:59:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:10,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047001780] [2022-11-20 11:59:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:10,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:59:10,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:10,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047001780] [2022-11-20 11:59:10,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047001780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305306859] [2022-11-20 11:59:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:10,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:10,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:10,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:11,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:59:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:11,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:59:11,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:59:11,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:59:11,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305306859] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:11,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:59:11,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-20 11:59:11,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991108571] [2022-11-20 11:59:11,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:11,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:59:11,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:59:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:59:11,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 257 [2022-11-20 11:59:11,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 239 transitions, 617 flow. Second operand has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 9 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:11,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:11,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 257 [2022-11-20 11:59:11,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:14,876 INFO L130 PetriNetUnfolder]: 4159/10926 cut-off events. [2022-11-20 11:59:14,876 INFO L131 PetriNetUnfolder]: For 6685/7637 co-relation queries the response was YES. [2022-11-20 11:59:14,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22589 conditions, 10926 events. 4159/10926 cut-off events. For 6685/7637 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 110378 event pairs, 712 based on Foata normal form. 938/10972 useless extension candidates. Maximal degree in co-relation 22572. Up to 1647 conditions per place. [2022-11-20 11:59:15,118 INFO L137 encePairwiseOnDemand]: 246/257 looper letters, 143 selfloop transitions, 27 changer transitions 0/336 dead transitions. [2022-11-20 11:59:15,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 336 transitions, 1373 flow [2022-11-20 11:59:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:59:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:59:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2156 transitions. [2022-11-20 11:59:15,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7626459143968871 [2022-11-20 11:59:15,125 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2156 transitions. [2022-11-20 11:59:15,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2156 transitions. [2022-11-20 11:59:15,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:15,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2156 transitions. [2022-11-20 11:59:15,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:15,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:15,141 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:15,141 INFO L175 Difference]: Start difference. First operand has 244 places, 239 transitions, 617 flow. Second operand 11 states and 2156 transitions. [2022-11-20 11:59:15,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 336 transitions, 1373 flow [2022-11-20 11:59:15,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 336 transitions, 1369 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 11:59:15,194 INFO L231 Difference]: Finished difference. Result has 254 places, 256 transitions, 810 flow [2022-11-20 11:59:15,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=810, PETRI_PLACES=254, PETRI_TRANSITIONS=256} [2022-11-20 11:59:15,198 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 26 predicate places. [2022-11-20 11:59:15,198 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 256 transitions, 810 flow [2022-11-20 11:59:15,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 9 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:15,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:15,202 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:15,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:15,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:15,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1985158974, now seen corresponding path program 2 times [2022-11-20 11:59:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:15,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22406122] [2022-11-20 11:59:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:15,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:59:15,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:15,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22406122] [2022-11-20 11:59:15,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22406122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:15,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393867278] [2022-11-20 11:59:15,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:59:15,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:15,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:15,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:15,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:59:15,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:59:15,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:59:15,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:59:15,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:59:16,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:16,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393867278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:16,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:59:16,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-20 11:59:16,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797591053] [2022-11-20 11:59:16,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:16,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:16,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:16,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:16,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:59:16,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 257 [2022-11-20 11:59:16,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 256 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:16,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:16,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 257 [2022-11-20 11:59:16,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:18,392 INFO L130 PetriNetUnfolder]: 1956/6202 cut-off events. [2022-11-20 11:59:18,393 INFO L131 PetriNetUnfolder]: For 6059/6619 co-relation queries the response was YES. [2022-11-20 11:59:18,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13223 conditions, 6202 events. 1956/6202 cut-off events. For 6059/6619 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 58856 event pairs, 360 based on Foata normal form. 581/6225 useless extension candidates. Maximal degree in co-relation 13203. Up to 1802 conditions per place. [2022-11-20 11:59:18,479 INFO L137 encePairwiseOnDemand]: 248/257 looper letters, 65 selfloop transitions, 18 changer transitions 0/261 dead transitions. [2022-11-20 11:59:18,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 261 transitions, 983 flow [2022-11-20 11:59:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:59:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:59:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1531 transitions. [2022-11-20 11:59:18,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7446498054474708 [2022-11-20 11:59:18,485 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1531 transitions. [2022-11-20 11:59:18,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1531 transitions. [2022-11-20 11:59:18,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:18,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1531 transitions. [2022-11-20 11:59:18,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 191.375) internal successors, (1531), 8 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:18,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 257.0) internal successors, (2313), 9 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:18,497 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 257.0) internal successors, (2313), 9 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:18,497 INFO L175 Difference]: Start difference. First operand has 254 places, 256 transitions, 810 flow. Second operand 8 states and 1531 transitions. [2022-11-20 11:59:18,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 261 transitions, 983 flow [2022-11-20 11:59:18,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 261 transitions, 951 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-20 11:59:18,533 INFO L231 Difference]: Finished difference. Result has 252 places, 249 transitions, 768 flow [2022-11-20 11:59:18,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=252, PETRI_TRANSITIONS=249} [2022-11-20 11:59:18,535 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 24 predicate places. [2022-11-20 11:59:18,536 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 249 transitions, 768 flow [2022-11-20 11:59:18,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:18,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:18,537 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:18,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 11:59:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c96ad2-4436-4e75-b1dc-26d3e119c34c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:18,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash 570630618, now seen corresponding path program 1 times [2022-11-20 11:59:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628275482] [2022-11-20 11:59:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:18,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:59:19,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:19,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628275482] [2022-11-20 11:59:19,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628275482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:19,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:19,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:59:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180053524] [2022-11-20 11:59:19,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:19,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:59:19,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:59:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:59:19,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 257 [2022-11-20 11:59:19,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 249 transitions, 768 flow. Second operand has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:19,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:19,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 257 [2022-11-20 11:59:19,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:45,625 INFO L130 PetriNetUnfolder]: 57595/126340 cut-off events. [2022-11-20 11:59:45,626 INFO L131 PetriNetUnfolder]: For 44485/45680 co-relation queries the response was YES. [2022-11-20 11:59:46,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245969 conditions, 126340 events. 57595/126340 cut-off events. For 44485/45680 co-relation queries the response was YES. Maximal size of possible extension queue 3791. Compared 1583062 event pairs, 27819 based on Foata normal form. 554/116760 useless extension candidates. Maximal degree in co-relation 245952. Up to 28197 conditions per place. [2022-11-20 11:59:47,529 INFO L137 encePairwiseOnDemand]: 237/257 looper letters, 255 selfloop transitions, 36 changer transitions 0/462 dead transitions. [2022-11-20 11:59:47,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 462 transitions, 1935 flow [2022-11-20 11:59:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:59:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:59:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3117 transitions. [2022-11-20 11:59:47,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7134355687800412 [2022-11-20 11:59:47,542 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3117 transitions. [2022-11-20 11:59:47,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3117 transitions. [2022-11-20 11:59:47,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:47,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3117 transitions. [2022-11-20 11:59:47,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 183.35294117647058) internal successors, (3117), 17 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:47,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 257.0) internal successors, (4626), 18 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:47,588 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 257.0) internal successors, (4626), 18 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:47,588 INFO L175 Difference]: Start difference. First operand has 252 places, 249 transitions, 768 flow. Second operand 17 states and 3117 transitions. [2022-11-20 11:59:47,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 462 transitions, 1935 flow [2022-11-20 11:59:48,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 462 transitions, 1915 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:59:48,566 INFO L231 Difference]: Finished difference. Result has 273 places, 283 transitions, 985 flow [2022-11-20 11:59:48,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=985, PETRI_PLACES=273, PETRI_TRANSITIONS=283} [2022-11-20 11:59:48,567 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 45 predicate places. [2022-11-20 11:59:48,568 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 283 transitions, 985 flow [2022-11-20 11:59:48,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:48,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:48,570 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:48,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:59:48,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 11:59:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:48,572 INFO L85 PathProgramCache]: Analyzing trace with hash -952557276, now seen corresponding path program 1 times [2022-11-20 11:59:48,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:48,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278772692] [2022-11-20 11:59:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:48,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:59:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:49,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278772692] [2022-11-20 11:59:49,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278772692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:49,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:49,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:59:49,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425598148] [2022-11-20 11:59:49,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:49,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:59:49,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:59:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:59:49,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 257 [2022-11-20 11:59:49,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 283 transitions, 985 flow. Second operand has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:49,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:49,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 257 [2022-11-20 11:59:49,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:11,130 INFO L130 PetriNetUnfolder]: 51946/95292 cut-off events. [2022-11-20 12:00:11,130 INFO L131 PetriNetUnfolder]: For 78570/79858 co-relation queries the response was YES. [2022-11-20 12:00:11,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232875 conditions, 95292 events. 51946/95292 cut-off events. For 78570/79858 co-relation queries the response was YES. Maximal size of possible extension queue 3216. Compared 1031717 event pairs, 22608 based on Foata normal form. 1046/92047 useless extension candidates. Maximal degree in co-relation 232848. Up to 29169 conditions per place. [2022-11-20 12:00:12,330 INFO L137 encePairwiseOnDemand]: 239/257 looper letters, 288 selfloop transitions, 21 changer transitions 2/478 dead transitions. [2022-11-20 12:00:12,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 478 transitions, 2374 flow [2022-11-20 12:00:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:00:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:00:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2737 transitions. [2022-11-20 12:00:12,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7099870298313878 [2022-11-20 12:00:12,348 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2737 transitions. [2022-11-20 12:00:12,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2737 transitions. [2022-11-20 12:00:12,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:12,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2737 transitions. [2022-11-20 12:00:12,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 182.46666666666667) internal successors, (2737), 15 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:12,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 257.0) internal successors, (4112), 16 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:12,381 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 257.0) internal successors, (4112), 16 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:12,381 INFO L175 Difference]: Start difference. First operand has 273 places, 283 transitions, 985 flow. Second operand 15 states and 2737 transitions. [2022-11-20 12:00:12,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 478 transitions, 2374 flow