./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- 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-38b53e6 [2022-11-25 17:21:06,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:21:06,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:21:06,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:21:06,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:21:06,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:21:06,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:21:06,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:21:06,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:21:06,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:21:06,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:21:06,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:21:06,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:21:06,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:21:06,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:21:06,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:21:06,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:21:06,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:21:06,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:21:06,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:21:06,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:21:06,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:21:06,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:21:06,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:21:06,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:21:06,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:21:06,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:21:06,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:21:06,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:21:06,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:21:06,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:21:06,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:21:06,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:21:06,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:21:06,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:21:06,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:21:06,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:21:06,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:21:06,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:21:06,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:21:06,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:21:06,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:21:06,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:21:06,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:21:06,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:21:06,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:21:06,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:21:06,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:21:06,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:21:06,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:21:06,801 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:21:06,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:21:06,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:21:06,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:21:06,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:21:06,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:21:06,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:21:06,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:21:06,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:21:06,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:21:06,804 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:21:06,805 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:21:06,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:21:06,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:21:06,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:21:06,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:21:06,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:21:06,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:21:06,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:21:06,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:21:06,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:21:06,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:21:06,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:21:06,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:21:06,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:21:06,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:21:06,809 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:21:06,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:21:06,810 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-11-25 17:21:07,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:21:07,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:21:07,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:21:07,165 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:21:07,166 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:21:07,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-25 17:21:10,576 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:21:11,019 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:21:11,020 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-25 17:21:11,043 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/data/7be1c173c/5f26124cd9b747b281e19e86d101c30d/FLAGb8460befe [2022-11-25 17:21:11,067 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/data/7be1c173c/5f26124cd9b747b281e19e86d101c30d [2022-11-25 17:21:11,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:21:11,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:21:11,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:21:11,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:21:11,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:21:11,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:21:11" (1/1) ... [2022-11-25 17:21:11,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6160f8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:11, skipping insertion in model container [2022-11-25 17:21:11,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:21:11" (1/1) ... [2022-11-25 17:21:11,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:21:11,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:21:11,839 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_957773c1-dacc-4f28-9202-19bd9a761e8b/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-25 17:21:11,879 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:21:11,883 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:21:11,887 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:21:11,889 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:21:11,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:21:11,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:21:12,011 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_957773c1-dacc-4f28-9202-19bd9a761e8b/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-25 17:21:12,017 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:21:12,018 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:21:12,019 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:21:12,020 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:21:12,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:21:12,127 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:21:12,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12 WrapperNode [2022-11-25 17:21:12,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:21:12,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:21:12,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:21:12,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:21:12,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,245 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 456 [2022-11-25 17:21:12,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:21:12,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:21:12,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:21:12,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:21:12,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,326 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:21:12,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:21:12,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:21:12,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:21:12,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (1/1) ... [2022-11-25 17:21:12,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:21:12,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:12,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:12,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:21:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:21:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:21:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-25 17:21:12,447 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-25 17:21:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:21:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:21:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-25 17:21:12,448 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-25 17:21:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:21:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:21:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:21:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:21:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:21:12,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:21:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:21:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:21:12,452 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:21:12,744 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:21:12,747 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:21:13,932 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:21:13,955 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:21:13,955 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-25 17:21:13,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:13 BoogieIcfgContainer [2022-11-25 17:21:13,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:21:13,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:21:13,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:21:13,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:21:13,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:21:11" (1/3) ... [2022-11-25 17:21:13,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638f394a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:21:13, skipping insertion in model container [2022-11-25 17:21:13,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:12" (2/3) ... [2022-11-25 17:21:13,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638f394a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:21:13, skipping insertion in model container [2022-11-25 17:21:13,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:13" (3/3) ... [2022-11-25 17:21:13,975 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-11-25 17:21:13,988 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:21:14,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:21:14,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-25 17:21:14,003 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:21:14,223 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:21:14,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 498 transitions, 1018 flow [2022-11-25 17:21:14,658 INFO L130 PetriNetUnfolder]: 77/775 cut-off events. [2022-11-25 17:21:14,658 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-25 17:21:14,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 775 events. 77/775 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3840 event pairs, 0 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 404. Up to 8 conditions per place. [2022-11-25 17:21:14,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 457 places, 498 transitions, 1018 flow [2022-11-25 17:21:14,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 498 transitions, 1018 flow [2022-11-25 17:21:14,718 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:21:14,738 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 498 transitions, 1018 flow [2022-11-25 17:21:14,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 498 transitions, 1018 flow [2022-11-25 17:21:14,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 498 transitions, 1018 flow [2022-11-25 17:21:14,980 INFO L130 PetriNetUnfolder]: 77/775 cut-off events. [2022-11-25 17:21:14,981 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-25 17:21:14,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 775 events. 77/775 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3840 event pairs, 0 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 404. Up to 8 conditions per place. [2022-11-25 17:21:15,049 INFO L119 LiptonReduction]: Number of co-enabled transitions 67804 [2022-11-25 17:22:12,944 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification that was a NOOP. DAG size: 138 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:22:18,998 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:22:26,569 WARN L233 SmtUtils]: Spent 7.57s on a formula simplification that was a NOOP. DAG size: 138 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:22:32,983 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:22:39,520 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:22:49,777 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:23:31,603 WARN L233 SmtUtils]: Spent 37.82s on a formula simplification that was a NOOP. DAG size: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:23:56,881 WARN L233 SmtUtils]: Spent 25.28s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:24:33,256 WARN L233 SmtUtils]: Spent 36.37s on a formula simplification that was a NOOP. DAG size: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:25:01,685 WARN L233 SmtUtils]: Spent 28.43s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:27:48,937 WARN L233 SmtUtils]: Spent 2.78m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:30:13,903 WARN L233 SmtUtils]: Spent 2.42m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:32:46,319 WARN L233 SmtUtils]: Spent 2.54m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:34:47,235 WARN L233 SmtUtils]: Spent 2.02m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:34:48,290 INFO L134 LiptonReduction]: Checked pairs total: 512773 [2022-11-25 17:34:48,290 INFO L136 LiptonReduction]: Total number of compositions: 457 [2022-11-25 17:34:48,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:34:48,311 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;@5caf9a80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:34:48,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-25 17:34:48,316 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-11-25 17:34:48,316 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:34:48,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:48,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:34:48,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-11-25 17:34:48,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:48,323 INFO L85 PathProgramCache]: Analyzing trace with hash 60118, now seen corresponding path program 1 times [2022-11-25 17:34:48,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:34:48,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056170168] [2022-11-25 17:34:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:48,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:34:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:34:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:34:48,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056170168] [2022-11-25 17:34:48,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056170168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:34:48,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:34:48,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:34:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407608886] [2022-11-25 17:34:48,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:34:48,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:34:48,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:34:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:34:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:34:48,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 456 out of 955 [2022-11-25 17:34:48,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 197 transitions, 416 flow. Second operand has 2 states, 2 states have (on average 457.0) internal successors, (914), 2 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:48,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:48,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 456 of 955 [2022-11-25 17:34:48,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:34:50,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:34:54,011 INFO L130 PetriNetUnfolder]: 8558/21701 cut-off events. [2022-11-25 17:34:54,011 INFO L131 PetriNetUnfolder]: For 304/359 co-relation queries the response was YES. [2022-11-25 17:34:54,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34418 conditions, 21701 events. 8558/21701 cut-off events. For 304/359 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 214877 event pairs, 7350 based on Foata normal form. 1480/20259 useless extension candidates. Maximal degree in co-relation 32916. Up to 12562 conditions per place. [2022-11-25 17:34:54,209 INFO L137 encePairwiseOnDemand]: 925/955 looper letters, 69 selfloop transitions, 0 changer transitions 0/167 dead transitions. [2022-11-25 17:34:54,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 167 transitions, 494 flow [2022-11-25 17:34:54,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:34:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:34:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1011 transitions. [2022-11-25 17:34:54,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5293193717277487 [2022-11-25 17:34:54,239 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1011 transitions. [2022-11-25 17:34:54,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1011 transitions. [2022-11-25 17:34:54,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:34:54,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1011 transitions. [2022-11-25 17:34:54,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 505.5) internal successors, (1011), 2 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:54,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 955.0) internal successors, (2865), 3 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:54,276 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 955.0) internal successors, (2865), 3 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:54,278 INFO L175 Difference]: Start difference. First operand has 170 places, 197 transitions, 416 flow. Second operand 2 states and 1011 transitions. [2022-11-25 17:34:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 167 transitions, 494 flow [2022-11-25 17:34:54,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 167 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:34:54,293 INFO L231 Difference]: Finished difference. Result has 161 places, 167 transitions, 356 flow [2022-11-25 17:34:54,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=955, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=161, PETRI_TRANSITIONS=167} [2022-11-25 17:34:54,300 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -9 predicate places. [2022-11-25 17:34:54,301 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 167 transitions, 356 flow [2022-11-25 17:34:54,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 457.0) internal successors, (914), 2 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:54,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:54,302 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 17:34:54,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:34:54,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-11-25 17:34:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1881759646, now seen corresponding path program 1 times [2022-11-25 17:34:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:34:54,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597096304] [2022-11-25 17:34:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:34:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:34:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:34:54,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597096304] [2022-11-25 17:34:54,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597096304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:34:54,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:34:54,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:34:54,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814801527] [2022-11-25 17:34:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:34:54,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:34:54,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:34:54,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:34:54,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:34:54,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 452 out of 955 [2022-11-25 17:34:54,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 167 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 453.6666666666667) internal successors, (1361), 3 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:54,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:54,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 452 of 955 [2022-11-25 17:34:54,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:34:56,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:34:59,405 INFO L130 PetriNetUnfolder]: 8559/21704 cut-off events. [2022-11-25 17:34:59,405 INFO L131 PetriNetUnfolder]: For 304/359 co-relation queries the response was YES. [2022-11-25 17:34:59,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34425 conditions, 21704 events. 8559/21704 cut-off events. For 304/359 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 214847 event pairs, 7350 based on Foata normal form. 0/18781 useless extension candidates. Maximal degree in co-relation 34420. Up to 12562 conditions per place. [2022-11-25 17:34:59,542 INFO L137 encePairwiseOnDemand]: 952/955 looper letters, 70 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2022-11-25 17:34:59,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 170 transitions, 506 flow [2022-11-25 17:34:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:34:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:34:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1429 transitions. [2022-11-25 17:34:59,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4987783595113438 [2022-11-25 17:34:59,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1429 transitions. [2022-11-25 17:34:59,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1429 transitions. [2022-11-25 17:34:59,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:34:59,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1429 transitions. [2022-11-25 17:34:59,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.3333333333333) internal successors, (1429), 3 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:59,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 955.0) internal successors, (3820), 4 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:59,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 955.0) internal successors, (3820), 4 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:59,560 INFO L175 Difference]: Start difference. First operand has 161 places, 167 transitions, 356 flow. Second operand 3 states and 1429 transitions. [2022-11-25 17:34:59,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 170 transitions, 506 flow [2022-11-25 17:34:59,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 170 transitions, 506 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:34:59,567 INFO L231 Difference]: Finished difference. Result has 164 places, 168 transitions, 368 flow [2022-11-25 17:34:59,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=955, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=164, PETRI_TRANSITIONS=168} [2022-11-25 17:34:59,569 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -6 predicate places. [2022-11-25 17:34:59,569 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 368 flow [2022-11-25 17:34:59,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 453.6666666666667) internal successors, (1361), 3 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:59,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:59,572 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:34:59,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:34:59,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-11-25 17:34:59,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1049411242, now seen corresponding path program 1 times [2022-11-25 17:34:59,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:34:59,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397139422] [2022-11-25 17:34:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:59,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:34:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:34:59,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:34:59,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397139422] [2022-11-25 17:34:59,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397139422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:34:59,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:34:59,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:34:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293148954] [2022-11-25 17:34:59,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:34:59,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:34:59,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:34:59,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:34:59,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:34:59,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 452 out of 955 [2022-11-25 17:34:59,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 454.3333333333333) internal successors, (1363), 3 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:59,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:59,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 452 of 955 [2022-11-25 17:34:59,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:01,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:04,343 INFO L130 PetriNetUnfolder]: 8559/21706 cut-off events. [2022-11-25 17:35:04,343 INFO L131 PetriNetUnfolder]: For 304/359 co-relation queries the response was YES. [2022-11-25 17:35:04,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34436 conditions, 21706 events. 8559/21706 cut-off events. For 304/359 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 214975 event pairs, 7350 based on Foata normal form. 2/18788 useless extension candidates. Maximal degree in co-relation 34429. Up to 12565 conditions per place. [2022-11-25 17:35:04,489 INFO L137 encePairwiseOnDemand]: 952/955 looper letters, 69 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2022-11-25 17:35:04,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 169 transitions, 512 flow [2022-11-25 17:35:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:35:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:35:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1427 transitions. [2022-11-25 17:35:04,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4980802792321117 [2022-11-25 17:35:04,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1427 transitions. [2022-11-25 17:35:04,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1427 transitions. [2022-11-25 17:35:04,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:04,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1427 transitions. [2022-11-25 17:35:04,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 475.6666666666667) internal successors, (1427), 3 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:04,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 955.0) internal successors, (3820), 4 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:04,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 955.0) internal successors, (3820), 4 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:04,511 INFO L175 Difference]: Start difference. First operand has 164 places, 168 transitions, 368 flow. Second operand 3 states and 1427 transitions. [2022-11-25 17:35:04,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 169 transitions, 512 flow [2022-11-25 17:35:04,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 169 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:35:04,517 INFO L231 Difference]: Finished difference. Result has 166 places, 169 transitions, 380 flow [2022-11-25 17:35:04,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=955, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=166, PETRI_TRANSITIONS=169} [2022-11-25 17:35:04,519 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -4 predicate places. [2022-11-25 17:35:04,519 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 169 transitions, 380 flow [2022-11-25 17:35:04,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.3333333333333) internal successors, (1363), 3 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:04,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:04,520 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:04,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:35:04,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-11-25 17:35:04,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash 226506800, now seen corresponding path program 1 times [2022-11-25 17:35:04,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:04,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367322374] [2022-11-25 17:35:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:04,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:04,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:35:04,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314839175] [2022-11-25 17:35:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:04,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:35:04,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:35:04,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:35:04,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:35:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:05,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:35:05,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:35:05,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:35:05,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:05,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367322374] [2022-11-25 17:35:05,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:35:05,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314839175] [2022-11-25 17:35:05,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314839175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:05,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:05,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 17:35:05,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790864060] [2022-11-25 17:35:05,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:05,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:35:05,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:35:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:35:05,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 955 [2022-11-25 17:35:05,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 169 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 452.8333333333333) internal successors, (2717), 6 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:05,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:05,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 955 [2022-11-25 17:35:05,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:07,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:09,736 INFO L130 PetriNetUnfolder]: 8559/21710 cut-off events. [2022-11-25 17:35:09,736 INFO L131 PetriNetUnfolder]: For 305/360 co-relation queries the response was YES. [2022-11-25 17:35:09,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34458 conditions, 21710 events. 8559/21710 cut-off events. For 305/360 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 215069 event pairs, 7350 based on Foata normal form. 4/18794 useless extension candidates. Maximal degree in co-relation 34450. Up to 12565 conditions per place. [2022-11-25 17:35:09,847 INFO L137 encePairwiseOnDemand]: 952/955 looper letters, 69 selfloop transitions, 4 changer transitions 0/171 dead transitions. [2022-11-25 17:35:09,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 171 transitions, 534 flow [2022-11-25 17:35:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:35:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:35:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2329 transitions. [2022-11-25 17:35:09,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48774869109947644 [2022-11-25 17:35:09,854 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2329 transitions. [2022-11-25 17:35:09,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2329 transitions. [2022-11-25 17:35:09,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:09,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2329 transitions. [2022-11-25 17:35:09,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 465.8) internal successors, (2329), 5 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:09,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 955.0) internal successors, (5730), 6 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:09,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 955.0) internal successors, (5730), 6 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:09,873 INFO L175 Difference]: Start difference. First operand has 166 places, 169 transitions, 380 flow. Second operand 5 states and 2329 transitions. [2022-11-25 17:35:09,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 171 transitions, 534 flow [2022-11-25 17:35:09,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 171 transitions, 530 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:35:09,879 INFO L231 Difference]: Finished difference. Result has 171 places, 171 transitions, 406 flow [2022-11-25 17:35:09,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=955, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=171, PETRI_TRANSITIONS=171} [2022-11-25 17:35:09,880 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 1 predicate places. [2022-11-25 17:35:09,880 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 171 transitions, 406 flow [2022-11-25 17:35:09,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 452.8333333333333) internal successors, (2717), 6 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:09,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:09,883 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:09,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:10,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:35:10,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-11-25 17:35:10,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:10,099 INFO L85 PathProgramCache]: Analyzing trace with hash -50913424, now seen corresponding path program 2 times [2022-11-25 17:35:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:10,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379876860] [2022-11-25 17:35:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:10,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:10,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:35:10,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473788161] [2022-11-25 17:35:10,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:35:10,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:35:10,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:35:10,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:35:10,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:35:11,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:35:11,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:11,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:35:11,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:35:11,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:35:11,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:11,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379876860] [2022-11-25 17:35:11,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:35:11,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473788161] [2022-11-25 17:35:11,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473788161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:11,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:11,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-25 17:35:11,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252039529] [2022-11-25 17:35:11,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:35:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:11,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:35:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:35:11,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 955 [2022-11-25 17:35:11,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 171 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 452.5) internal successors, (4525), 10 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:11,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:11,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 955 [2022-11-25 17:35:11,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:13,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:15,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:17,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:19,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:20,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:22,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:23,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:25,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:28,797 INFO L130 PetriNetUnfolder]: 8559/21720 cut-off events. [2022-11-25 17:35:28,797 INFO L131 PetriNetUnfolder]: For 339/394 co-relation queries the response was YES. [2022-11-25 17:35:28,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34514 conditions, 21720 events. 8559/21720 cut-off events. For 339/394 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 215156 event pairs, 7350 based on Foata normal form. 10/18810 useless extension candidates. Maximal degree in co-relation 34504. Up to 12565 conditions per place. [2022-11-25 17:35:28,906 INFO L137 encePairwiseOnDemand]: 952/955 looper letters, 69 selfloop transitions, 9 changer transitions 0/176 dead transitions. [2022-11-25 17:35:28,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 176 transitions, 592 flow [2022-11-25 17:35:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:35:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:35:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4592 transitions. [2022-11-25 17:35:28,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48083769633507856 [2022-11-25 17:35:28,920 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4592 transitions. [2022-11-25 17:35:28,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4592 transitions. [2022-11-25 17:35:28,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:28,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4592 transitions. [2022-11-25 17:35:28,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 459.2) internal successors, (4592), 10 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:28,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 955.0) internal successors, (10505), 11 states have internal predecessors, (10505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:28,955 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 955.0) internal successors, (10505), 11 states have internal predecessors, (10505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:28,956 INFO L175 Difference]: Start difference. First operand has 171 places, 171 transitions, 406 flow. Second operand 10 states and 4592 transitions. [2022-11-25 17:35:28,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 176 transitions, 592 flow [2022-11-25 17:35:28,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 176 transitions, 582 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 17:35:28,961 INFO L231 Difference]: Finished difference. Result has 184 places, 176 transitions, 476 flow [2022-11-25 17:35:28,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=955, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=476, PETRI_PLACES=184, PETRI_TRANSITIONS=176} [2022-11-25 17:35:28,962 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 14 predicate places. [2022-11-25 17:35:28,962 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 176 transitions, 476 flow [2022-11-25 17:35:28,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 452.5) internal successors, (4525), 10 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:28,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:28,965 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:28,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:29,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:35:29,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-11-25 17:35:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1052614230, now seen corresponding path program 3 times [2022-11-25 17:35:29,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:29,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137803401] [2022-11-25 17:35:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:29,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:35:29,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287092126] [2022-11-25 17:35:29,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:35:29,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:35:29,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:35:29,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:35:29,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:35:30,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 17:35:30,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:30,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:35:30,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:35:30,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 17:35:30,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:30,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137803401] [2022-11-25 17:35:30,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:35:30,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287092126] [2022-11-25 17:35:30,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287092126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:30,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:30,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-25 17:35:30,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904931363] [2022-11-25 17:35:30,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:35:30,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:35:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:35:31,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 955 [2022-11-25 17:35:31,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 176 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 453.1666666666667) internal successors, (2719), 6 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:31,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:31,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 955 [2022-11-25 17:35:31,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:32,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:34,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:36,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:39,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:42,331 INFO L130 PetriNetUnfolder]: 8561/21743 cut-off events. [2022-11-25 17:35:42,331 INFO L131 PetriNetUnfolder]: For 407/462 co-relation queries the response was YES. [2022-11-25 17:35:42,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34678 conditions, 21743 events. 8561/21743 cut-off events. For 407/462 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 214952 event pairs, 7350 based on Foata normal form. 3/18826 useless extension candidates. Maximal degree in co-relation 34662. Up to 12559 conditions per place. [2022-11-25 17:35:42,469 INFO L137 encePairwiseOnDemand]: 951/955 looper letters, 105 selfloop transitions, 6 changer transitions 0/209 dead transitions. [2022-11-25 17:35:42,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 209 transitions, 991 flow [2022-11-25 17:35:42,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:35:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:35:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2788 transitions. [2022-11-25 17:35:42,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48656195462478186 [2022-11-25 17:35:42,478 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2788 transitions. [2022-11-25 17:35:42,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2788 transitions. [2022-11-25 17:35:42,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:42,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2788 transitions. [2022-11-25 17:35:42,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 464.6666666666667) internal successors, (2788), 6 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:42,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 955.0) internal successors, (6685), 7 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:42,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 955.0) internal successors, (6685), 7 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:42,497 INFO L175 Difference]: Start difference. First operand has 184 places, 176 transitions, 476 flow. Second operand 6 states and 2788 transitions. [2022-11-25 17:35:42,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 209 transitions, 991 flow [2022-11-25 17:35:42,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 209 transitions, 829 flow, removed 64 selfloop flow, removed 4 redundant places. [2022-11-25 17:35:42,506 INFO L231 Difference]: Finished difference. Result has 189 places, 179 transitions, 511 flow [2022-11-25 17:35:42,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=955, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=511, PETRI_PLACES=189, PETRI_TRANSITIONS=179} [2022-11-25 17:35:42,507 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 19 predicate places. [2022-11-25 17:35:42,507 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 179 transitions, 511 flow [2022-11-25 17:35:42,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 453.1666666666667) internal successors, (2719), 6 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:42,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:42,509 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 4, 4, 2, 1, 1, 1, 1, 1] [2022-11-25 17:35:42,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:35:42,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:35:42,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-11-25 17:35:42,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:42,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1655032194, now seen corresponding path program 4 times [2022-11-25 17:35:42,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:42,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782238083] [2022-11-25 17:35:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:42,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:44,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:35:44,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56956030] [2022-11-25 17:35:44,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:35:44,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:35:44,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:35:44,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:35:44,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:35:53,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:35:53,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:53,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 30513 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:35:53,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 247 proven. 36 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2022-11-25 17:35:53,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 247 proven. 36 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2022-11-25 17:35:53,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:53,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782238083] [2022-11-25 17:35:53,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:35:53,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56956030] [2022-11-25 17:35:53,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56956030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:53,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:53,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-25 17:35:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186125820] [2022-11-25 17:35:53,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:53,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 17:35:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:53,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 17:35:53,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:35:54,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 955 [2022-11-25 17:35:54,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 179 transitions, 511 flow. Second operand has 20 states, 20 states have (on average 452.4) internal successors, (9048), 20 states have internal predecessors, (9048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:54,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:54,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 955 [2022-11-25 17:35:54,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:56,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 17:35:59,774 INFO L130 PetriNetUnfolder]: 8561/21779 cut-off events. [2022-11-25 17:35:59,774 INFO L131 PetriNetUnfolder]: For 2153/2208 co-relation queries the response was YES. [2022-11-25 17:35:59,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34762 conditions, 21779 events. 8561/21779 cut-off events. For 2153/2208 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 215093 event pairs, 7350 based on Foata normal form. 36/18895 useless extension candidates. Maximal degree in co-relation 34743. Up to 12571 conditions per place. [2022-11-25 17:35:59,929 INFO L137 encePairwiseOnDemand]: 952/955 looper letters, 71 selfloop transitions, 19 changer transitions 0/188 dead transitions. [2022-11-25 17:35:59,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 188 transitions, 745 flow [2022-11-25 17:35:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 17:35:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-25 17:35:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 8664 transitions. [2022-11-25 17:35:59,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4774869109947644 [2022-11-25 17:35:59,952 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 8664 transitions. [2022-11-25 17:35:59,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 8664 transitions. [2022-11-25 17:35:59,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:59,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 8664 transitions. [2022-11-25 17:35:59,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:36:00,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 955.0) internal successors, (19100), 20 states have internal predecessors, (19100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:36:00,011 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 955.0) internal successors, (19100), 20 states have internal predecessors, (19100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:36:00,011 INFO L175 Difference]: Start difference. First operand has 189 places, 179 transitions, 511 flow. Second operand 19 states and 8664 transitions. [2022-11-25 17:36:00,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 188 transitions, 745 flow [2022-11-25 17:36:00,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 188 transitions, 737 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 17:36:00,019 INFO L231 Difference]: Finished difference. Result has 215 places, 188 transitions, 687 flow [2022-11-25 17:36:00,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=955, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=687, PETRI_PLACES=215, PETRI_TRANSITIONS=188} [2022-11-25 17:36:00,020 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 45 predicate places. [2022-11-25 17:36:00,020 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 188 transitions, 687 flow [2022-11-25 17:36:00,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 452.4) internal successors, (9048), 20 states have internal predecessors, (9048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:36:00,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:36:00,024 INFO L209 CegarLoopForPetriNet]: trace histogram [68, 4, 4, 2, 1, 1, 1, 1, 1] [2022-11-25 17:36:00,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:36:00,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:36:00,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr6ASSERT_VIOLATIONDATA_RACE, t2_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2022-11-25 17:36:00,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash 55669474, now seen corresponding path program 5 times [2022-11-25 17:36:00,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:00,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201074318] [2022-11-25 17:36:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:00,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:03,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:36:03,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053040508] [2022-11-25 17:36:03,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:36:03,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:36:03,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:36:03,679 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:36:03,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_957773c1-dacc-4f28-9202-19bd9a761e8b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process