./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/10-synch_02-thread_nonunique.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/10-synch_02-thread_nonunique.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0 --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 2b48d13cab05bc3b998f8de65b383ec2ee92eaa2c6f230f8a23e235950b9a5ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:03:24,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:03:24,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:03:24,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:03:24,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:03:24,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:03:24,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:03:24,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:03:24,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:03:24,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:03:24,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:03:24,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:03:24,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:03:24,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:03:24,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:03:24,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:03:24,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:03:24,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:03:24,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:03:24,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:03:24,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:03:24,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:03:24,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:03:24,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:03:24,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:03:24,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:03:24,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:03:24,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:03:24,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:03:24,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:03:24,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:03:24,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:03:24,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:03:24,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:03:24,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:03:24,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:03:24,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:03:24,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:03:24,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:03:24,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:03:24,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:03:24,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-11-22 16:03:24,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:03:24,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:03:24,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:03:24,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:03:24,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-22 16:03:24,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-22 16:03:24,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:03:24,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:03:24,815 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:03:24,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:03:24,815 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:03:24,816 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 16:03:24,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:03:24,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:03:24,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:03:24,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:03:24,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:03:24,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:03:24,817 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-22 16:03:24,818 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:03:24,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:03:24,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:03:24,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:03:24,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:03:24,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:03:24,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:03:24,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:03:24,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:03:24,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:03:24,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:03:24,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:03:24,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:03:24,822 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:03:24,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:03:24,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:03:24,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:03:24,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b48d13cab05bc3b998f8de65b383ec2ee92eaa2c6f230f8a23e235950b9a5ba [2021-11-22 16:03:25,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:03:25,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:03:25,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:03:25,161 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:03:25,161 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:03:25,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/goblint-regression/10-synch_02-thread_nonunique.i [2021-11-22 16:03:25,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/data/5046285cb/320fc14328244dbf97a0f63250b2bfe7/FLAGef286acb6 [2021-11-22 16:03:25,871 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:03:25,872 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/sv-benchmarks/c/goblint-regression/10-synch_02-thread_nonunique.i [2021-11-22 16:03:25,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/data/5046285cb/320fc14328244dbf97a0f63250b2bfe7/FLAGef286acb6 [2021-11-22 16:03:26,115 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/data/5046285cb/320fc14328244dbf97a0f63250b2bfe7 [2021-11-22 16:03:26,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:03:26,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:03:26,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:03:26,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:03:26,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:03:26,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:26" (1/1) ... [2021-11-22 16:03:26,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a62824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:26, skipping insertion in model container [2021-11-22 16:03:26,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:26" (1/1) ... [2021-11-22 16:03:26,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:03:26,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:03:26,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:03:26,882 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:03:26,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:03:27,051 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:03:27,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27 WrapperNode [2021-11-22 16:03:27,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:03:27,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:03:27,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:03:27,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:03:27,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,134 INFO L137 Inliner]: procedures = 259, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2021-11-22 16:03:27,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:03:27,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:03:27,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:03:27,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:03:27,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:03:27,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:03:27,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:03:27,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:03:27,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (1/1) ... [2021-11-22 16:03:27,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:03:27,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:27,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:03:27,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:03:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 16:03:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 16:03:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 16:03:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 16:03:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-22 16:03:27,314 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-22 16:03:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:03:27,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:03:27,316 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-22 16:03:27,491 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:03:27,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:03:27,669 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:03:27,677 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:03:27,677 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 16:03:27,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:27 BoogieIcfgContainer [2021-11-22 16:03:27,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:03:27,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:03:27,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:03:27,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:03:27,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:03:26" (1/3) ... [2021-11-22 16:03:27,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1662438b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:27, skipping insertion in model container [2021-11-22 16:03:27,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:27" (2/3) ... [2021-11-22 16:03:27,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1662438b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:27, skipping insertion in model container [2021-11-22 16:03:27,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:27" (3/3) ... [2021-11-22 16:03:27,689 INFO L111 eAbstractionObserver]: Analyzing ICFG 10-synch_02-thread_nonunique.i [2021-11-22 16:03:27,695 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-22 16:03:27,699 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:03:27,700 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 16:03:27,700 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-22 16:03:27,738 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,739 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,739 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,739 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,740 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,740 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,740 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,740 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,741 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,741 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,741 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,742 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,742 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,743 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,743 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,744 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,744 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,744 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,744 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,746 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,747 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,747 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,757 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,758 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,758 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,759 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,759 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:27,766 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-22 16:03:27,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:03:27,828 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 16:03:27,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-22 16:03:27,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 56 transitions, 120 flow [2021-11-22 16:03:27,882 INFO L129 PetriNetUnfolder]: 5/79 cut-off events. [2021-11-22 16:03:27,882 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-22 16:03:27,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 79 events. 5/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2021-11-22 16:03:27,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 56 transitions, 120 flow [2021-11-22 16:03:27,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 56 transitions, 120 flow [2021-11-22 16:03:27,908 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-11-22 16:03:27,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-22 16:03:27,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:27,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:27,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-11-22 16:03:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1508681915, now seen corresponding path program 1 times [2021-11-22 16:03:27,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:27,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560858737] [2021-11-22 16:03:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:27,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:28,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:28,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560858737] [2021-11-22 16:03:28,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560858737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:28,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:28,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:03:28,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102449492] [2021-11-22 16:03:28,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:28,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:03:28,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:28,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:03:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:03:28,199 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 56 [2021-11-22 16:03:28,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 16:03:28,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 56 [2021-11-22 16:03:28,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 16:03:28,243 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2021-11-22 16:03:28,243 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-22 16:03:28,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 1/75 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 4. Up to 3 conditions per place. [2021-11-22 16:03:28,245 INFO L132 encePairwiseOnDemand]: 54/56 looper letters, 2 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2021-11-22 16:03:28,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 120 flow [2021-11-22 16:03:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:03:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-22 16:03:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions. [2021-11-22 16:03:28,260 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9642857142857143 [2021-11-22 16:03:28,261 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 108 transitions. [2021-11-22 16:03:28,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 108 transitions. [2021-11-22 16:03:28,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 16:03:28,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 108 transitions. [2021-11-22 16:03:28,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,273 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,275 INFO L186 Difference]: Start difference. First operand has 56 places, 56 transitions, 120 flow. Second operand 2 states and 108 transitions. [2021-11-22 16:03:28,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 120 flow [2021-11-22 16:03:28,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-22 16:03:28,283 INFO L242 Difference]: Finished difference. Result has 57 places, 54 transitions, 116 flow [2021-11-22 16:03:28,286 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2021-11-22 16:03:28,290 INFO L334 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2021-11-22 16:03:28,290 INFO L470 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 116 flow [2021-11-22 16:03:28,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,291 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:28,291 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:28,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:03:28,292 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-11-22 16:03:28,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash -298772548, now seen corresponding path program 1 times [2021-11-22 16:03:28,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:28,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561419806] [2021-11-22 16:03:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:28,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:28,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:28,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561419806] [2021-11-22 16:03:28,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561419806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:28,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:28,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:03:28,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112227551] [2021-11-22 16:03:28,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:28,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:03:28,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:28,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:03:28,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:28,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 56 [2021-11-22 16:03:28,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 16:03:28,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 56 [2021-11-22 16:03:28,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 16:03:28,469 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-11-22 16:03:28,469 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-22 16:03:28,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 66 events. 0/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-11-22 16:03:28,470 INFO L132 encePairwiseOnDemand]: 50/56 looper letters, 26 selfloop transitions, 4 changer transitions 8/64 dead transitions. [2021-11-22 16:03:28,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 200 flow [2021-11-22 16:03:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:03:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-22 16:03:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2021-11-22 16:03:28,474 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2021-11-22 16:03:28,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2021-11-22 16:03:28,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2021-11-22 16:03:28,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 16:03:28,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2021-11-22 16:03:28,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,480 INFO L186 Difference]: Start difference. First operand has 57 places, 54 transitions, 116 flow. Second operand 3 states and 130 transitions. [2021-11-22 16:03:28,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 200 flow [2021-11-22 16:03:28,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 200 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-22 16:03:28,494 INFO L242 Difference]: Finished difference. Result has 60 places, 47 transitions, 116 flow [2021-11-22 16:03:28,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2021-11-22 16:03:28,498 INFO L334 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2021-11-22 16:03:28,498 INFO L470 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 116 flow [2021-11-22 16:03:28,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,499 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:28,499 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:28,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:03:28,500 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-11-22 16:03:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1391277118, now seen corresponding path program 1 times [2021-11-22 16:03:28,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:28,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587492324] [2021-11-22 16:03:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:28,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:28,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:28,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587492324] [2021-11-22 16:03:28,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587492324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:28,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:28,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:03:28,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075357334] [2021-11-22 16:03:28,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:28,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:03:28,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:28,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:03:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:28,623 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 56 [2021-11-22 16:03:28,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 16:03:28,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 56 [2021-11-22 16:03:28,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 16:03:28,667 INFO L129 PetriNetUnfolder]: 0/58 cut-off events. [2021-11-22 16:03:28,675 INFO L130 PetriNetUnfolder]: For 9/13 co-relation queries the response was YES. [2021-11-22 16:03:28,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 58 events. 0/58 cut-off events. For 9/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-11-22 16:03:28,676 INFO L132 encePairwiseOnDemand]: 53/56 looper letters, 4 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2021-11-22 16:03:28,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 126 flow [2021-11-22 16:03:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:03:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-22 16:03:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2021-11-22 16:03:28,682 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-11-22 16:03:28,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2021-11-22 16:03:28,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2021-11-22 16:03:28,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 16:03:28,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2021-11-22 16:03:28,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,696 INFO L186 Difference]: Start difference. First operand has 60 places, 47 transitions, 116 flow. Second operand 3 states and 148 transitions. [2021-11-22 16:03:28,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 126 flow [2021-11-22 16:03:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-22 16:03:28,699 INFO L242 Difference]: Finished difference. Result has 52 places, 46 transitions, 110 flow [2021-11-22 16:03:28,701 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2021-11-22 16:03:28,702 INFO L334 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2021-11-22 16:03:28,703 INFO L470 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 110 flow [2021-11-22 16:03:28,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:28,705 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:28,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:03:28,731 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-11-22 16:03:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 499314067, now seen corresponding path program 1 times [2021-11-22 16:03:28,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:28,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888517659] [2021-11-22 16:03:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:28,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:03:28,763 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 16:03:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:03:28,809 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 16:03:28,810 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 16:03:28,811 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2021-11-22 16:03:28,813 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 4 remaining) [2021-11-22 16:03:28,814 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2021-11-22 16:03:28,814 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2021-11-22 16:03:28,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:03:28,819 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-22 16:03:28,821 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-22 16:03:28,821 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-11-22 16:03:28,829 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,830 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,830 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,830 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,830 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,831 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,831 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,831 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,831 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,832 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,832 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,832 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,832 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,833 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,833 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,833 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,833 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,834 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,834 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,834 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,834 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,834 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,835 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,835 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,835 WARN L322 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,836 WARN L322 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,836 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,836 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,836 WARN L322 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,836 WARN L322 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,837 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,837 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,837 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,837 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,838 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,838 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,838 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,838 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,839 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,839 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,839 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,839 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,839 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,840 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,840 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,840 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,841 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,841 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,841 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,842 WARN L322 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,842 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,842 WARN L322 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,843 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,843 WARN L322 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 16:03:28,844 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-22 16:03:28,848 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:03:28,850 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 16:03:28,850 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 16:03:28,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 152 flow [2021-11-22 16:03:28,881 INFO L129 PetriNetUnfolder]: 10/144 cut-off events. [2021-11-22 16:03:28,882 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-22 16:03:28,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 144 events. 10/144 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 305 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2021-11-22 16:03:28,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 152 flow [2021-11-22 16:03:28,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 152 flow [2021-11-22 16:03:28,894 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-11-22 16:03:28,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-22 16:03:28,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:28,894 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:28,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2021-11-22 16:03:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1987120065, now seen corresponding path program 1 times [2021-11-22 16:03:28,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:28,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987211862] [2021-11-22 16:03:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:28,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:28,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:28,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987211862] [2021-11-22 16:03:28,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987211862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:28,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:28,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:03:28,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204981994] [2021-11-22 16:03:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:28,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:03:28,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:03:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:28,951 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 67 [2021-11-22 16:03:28,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:28,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 16:03:28,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 67 [2021-11-22 16:03:28,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 16:03:29,078 INFO L129 PetriNetUnfolder]: 2/140 cut-off events. [2021-11-22 16:03:29,078 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-22 16:03:29,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 140 events. 2/140 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 301 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 47. Up to 47 conditions per place. [2021-11-22 16:03:29,080 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 36 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2021-11-22 16:03:29,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 266 flow [2021-11-22 16:03:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:03:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-22 16:03:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2021-11-22 16:03:29,083 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8407960199004975 [2021-11-22 16:03:29,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2021-11-22 16:03:29,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2021-11-22 16:03:29,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 16:03:29,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2021-11-22 16:03:29,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,087 INFO L186 Difference]: Start difference. First operand has 68 places, 67 transitions, 152 flow. Second operand 3 states and 169 transitions. [2021-11-22 16:03:29,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 266 flow [2021-11-22 16:03:29,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-22 16:03:29,092 INFO L242 Difference]: Finished difference. Result has 71 places, 67 transitions, 172 flow [2021-11-22 16:03:29,092 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2021-11-22 16:03:29,093 INFO L334 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2021-11-22 16:03:29,094 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 172 flow [2021-11-22 16:03:29,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,094 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:29,094 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:29,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:03:29,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2021-11-22 16:03:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:29,096 INFO L85 PathProgramCache]: Analyzing trace with hash 849774069, now seen corresponding path program 1 times [2021-11-22 16:03:29,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:29,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013590765] [2021-11-22 16:03:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:29,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:29,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:29,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013590765] [2021-11-22 16:03:29,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013590765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:29,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:29,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:03:29,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515108469] [2021-11-22 16:03:29,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:29,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:03:29,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:29,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:03:29,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:29,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-11-22 16:03:29,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 16:03:29,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-11-22 16:03:29,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 16:03:29,251 INFO L129 PetriNetUnfolder]: 34/341 cut-off events. [2021-11-22 16:03:29,252 INFO L130 PetriNetUnfolder]: For 88/171 co-relation queries the response was YES. [2021-11-22 16:03:29,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 341 events. 34/341 cut-off events. For 88/171 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1698 event pairs, 14 based on Foata normal form. 3/307 useless extension candidates. Maximal degree in co-relation 189. Up to 58 conditions per place. [2021-11-22 16:03:29,257 INFO L132 encePairwiseOnDemand]: 62/67 looper letters, 15 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2021-11-22 16:03:29,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 232 flow [2021-11-22 16:03:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:03:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-22 16:03:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2021-11-22 16:03:29,259 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8905472636815921 [2021-11-22 16:03:29,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2021-11-22 16:03:29,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2021-11-22 16:03:29,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 16:03:29,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2021-11-22 16:03:29,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,263 INFO L186 Difference]: Start difference. First operand has 71 places, 67 transitions, 172 flow. Second operand 3 states and 179 transitions. [2021-11-22 16:03:29,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 232 flow [2021-11-22 16:03:29,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-22 16:03:29,267 INFO L242 Difference]: Finished difference. Result has 74 places, 70 transitions, 198 flow [2021-11-22 16:03:29,267 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2021-11-22 16:03:29,268 INFO L334 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2021-11-22 16:03:29,269 INFO L470 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 198 flow [2021-11-22 16:03:29,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:29,269 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:29,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 16:03:29,270 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2021-11-22 16:03:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:29,271 INFO L85 PathProgramCache]: Analyzing trace with hash 63309174, now seen corresponding path program 1 times [2021-11-22 16:03:29,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:29,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647891253] [2021-11-22 16:03:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:29,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:29,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:29,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647891253] [2021-11-22 16:03:29,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647891253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:03:29,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426428758] [2021-11-22 16:03:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:29,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:29,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:29,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:03:29,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:03:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:29,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 16:03:29,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:03:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:29,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:03:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:29,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426428758] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:03:29,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:03:29,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-22 16:03:29,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434147109] [2021-11-22 16:03:29,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:03:29,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:03:29,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:03:29,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:03:29,721 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 67 [2021-11-22 16:03:29,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 198 flow. Second operand has 10 states, 10 states have (on average 43.2) internal successors, (432), 10 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 16:03:29,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 67 [2021-11-22 16:03:29,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 16:03:29,828 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2021-11-22 16:03:29,828 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-22 16:03:29,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 75 events. 3/75 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 1 based on Foata normal form. 2/72 useless extension candidates. Maximal degree in co-relation 75. Up to 9 conditions per place. [2021-11-22 16:03:29,831 INFO L132 encePairwiseOnDemand]: 62/67 looper letters, 10 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2021-11-22 16:03:29,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 180 flow [2021-11-22 16:03:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:03:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-22 16:03:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 379 transitions. [2021-11-22 16:03:29,834 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6285240464344942 [2021-11-22 16:03:29,835 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 379 transitions. [2021-11-22 16:03:29,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 379 transitions. [2021-11-22 16:03:29,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 16:03:29,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 379 transitions. [2021-11-22 16:03:29,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 42.111111111111114) internal successors, (379), 9 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,843 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,844 INFO L186 Difference]: Start difference. First operand has 74 places, 70 transitions, 198 flow. Second operand 9 states and 379 transitions. [2021-11-22 16:03:29,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 180 flow [2021-11-22 16:03:29,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 170 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-11-22 16:03:29,850 INFO L242 Difference]: Finished difference. Result has 59 places, 48 transitions, 142 flow [2021-11-22 16:03:29,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2021-11-22 16:03:29,853 INFO L334 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2021-11-22 16:03:29,854 INFO L470 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 142 flow [2021-11-22 16:03:29,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.2) internal successors, (432), 10 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:29,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:29,855 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:29,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:03:30,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:30,072 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2021-11-22 16:03:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 25788934, now seen corresponding path program 1 times [2021-11-22 16:03:30,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:30,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902891850] [2021-11-22 16:03:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:30,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 16:03:30,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:30,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902891850] [2021-11-22 16:03:30,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902891850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:30,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:30,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:03:30,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362748408] [2021-11-22 16:03:30,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:30,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:03:30,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:03:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:03:30,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-11-22 16:03:30,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:30,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 16:03:30,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-11-22 16:03:30,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 16:03:30,177 INFO L129 PetriNetUnfolder]: 19/119 cut-off events. [2021-11-22 16:03:30,177 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-11-22 16:03:30,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 119 events. 19/119 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 358 event pairs, 8 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 184. Up to 34 conditions per place. [2021-11-22 16:03:30,179 INFO L132 encePairwiseOnDemand]: 62/67 looper letters, 13 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2021-11-22 16:03:30,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 198 flow [2021-11-22 16:03:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:03:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-22 16:03:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2021-11-22 16:03:30,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8706467661691543 [2021-11-22 16:03:30,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2021-11-22 16:03:30,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2021-11-22 16:03:30,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 16:03:30,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2021-11-22 16:03:30,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:30,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:30,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:30,185 INFO L186 Difference]: Start difference. First operand has 59 places, 48 transitions, 142 flow. Second operand 3 states and 175 transitions. [2021-11-22 16:03:30,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 198 flow [2021-11-22 16:03:30,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 183 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-11-22 16:03:30,189 INFO L242 Difference]: Finished difference. Result has 58 places, 51 transitions, 163 flow [2021-11-22 16:03:30,189 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-11-22 16:03:30,191 INFO L334 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2021-11-22 16:03:30,191 INFO L470 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 163 flow [2021-11-22 16:03:30,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:30,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 16:03:30,195 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:30,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 16:03:30,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2021-11-22 16:03:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1788001667, now seen corresponding path program 1 times [2021-11-22 16:03:30,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:30,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501766995] [2021-11-22 16:03:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:30,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:03:30,213 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 16:03:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:03:30,232 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 16:03:30,232 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 16:03:30,233 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 5 remaining) [2021-11-22 16:03:30,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2021-11-22 16:03:30,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-11-22 16:03:30,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2021-11-22 16:03:30,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2021-11-22 16:03:30,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:03:30,235 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-22 16:03:30,239 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2021-11-22 16:03:30,240 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:03:30,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:03:30 BasicIcfg [2021-11-22 16:03:30,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:03:30,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:03:30,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:03:30,306 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:03:30,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:27" (3/4) ... [2021-11-22 16:03:30,310 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 16:03:30,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:03:30,311 INFO L158 Benchmark]: Toolchain (without parser) took 4191.07ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 49.7MB in the beginning and 40.0MB in the end (delta: 9.7MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2021-11-22 16:03:30,312 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 40.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:03:30,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 920.63ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 49.6MB in the beginning and 68.3MB in the end (delta: -18.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 16:03:30,313 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.71ms. Allocated memory is still 109.1MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:03:30,313 INFO L158 Benchmark]: Boogie Preprocessor took 59.22ms. Allocated memory is still 109.1MB. Free memory was 65.9MB in the beginning and 64.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:03:30,314 INFO L158 Benchmark]: RCFGBuilder took 483.87ms. Allocated memory is still 109.1MB. Free memory was 64.6MB in the beginning and 82.8MB in the end (delta: -18.2MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-11-22 16:03:30,315 INFO L158 Benchmark]: TraceAbstraction took 2615.35ms. Allocated memory is still 109.1MB. Free memory was 82.1MB in the beginning and 40.0MB in the end (delta: 42.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-11-22 16:03:30,315 INFO L158 Benchmark]: Witness Printer took 12.95ms. Allocated memory is still 109.1MB. Free memory is still 40.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:03:30,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 40.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 920.63ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 49.6MB in the beginning and 68.3MB in the end (delta: -18.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.71ms. Allocated memory is still 109.1MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.22ms. Allocated memory is still 109.1MB. Free memory was 65.9MB in the beginning and 64.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 483.87ms. Allocated memory is still 109.1MB. Free memory was 64.6MB in the beginning and 82.8MB in the end (delta: -18.2MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2615.35ms. Allocated memory is still 109.1MB. Free memory was 82.1MB in the beginning and 40.0MB in the end (delta: 42.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 12.95ms. Allocated memory is still 109.1MB. Free memory is still 40.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 919]: Data race detected Data race detected The following path leads to a data race: [L917] 0 int myglobal; VAL [myglobal=0] [L923] 0 pthread_t id[10]; VAL [id={2:0}, myglobal=0] [L924] 0 int i; VAL [id={2:0}, myglobal=0] [L925] 0 i=0 VAL [i=0, id={2:0}, myglobal=0] [L925] COND TRUE 0 i<10 VAL [i=0, id={2:0}, myglobal=0] [L926] FCALL, FORK 0 pthread_create(&id[i], ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, i=0, id={2:0}, myglobal=0, pthread_create(&id[i], ((void *)0), t_fun, ((void *)0))=-1] [L919] 1 myglobal=42 VAL [arg={0:0}, arg={0:0}, myglobal=42] [L925] 0 i++ VAL [arg={0:0}, arg={0:0}, i=1, id={2:0}, myglobal=42] [L925] COND TRUE 0 i<10 VAL [arg={0:0}, arg={0:0}, i=1, id={2:0}, myglobal=42] [L926] FCALL, FORK 0 pthread_create(&id[i], ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, arg={0:0}, i=1, id={2:0}, myglobal=42, pthread_create(&id[i], ((void *)0), t_fun, ((void *)0))=0] [L919] 2 myglobal=42 VAL [arg={0:0}, arg={0:0}, myglobal=42, myglobal=42=44] Now there is a data race, but we were unable to determine exactly which statements and variables are involved. - UnprovableResult [Line: 928]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 926]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 74 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 27 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 2 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-22 16:03:30,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_549e4e5d-f1a6-4da5-a6b3-22b49ee96228/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE