./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:07:46,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:07:46,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:07:46,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:07:46,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:07:46,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:07:46,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:07:46,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:07:46,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:07:46,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:07:46,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:07:46,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:07:46,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:07:46,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:07:46,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:07:46,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:07:46,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:07:46,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:07:46,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:07:46,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:07:46,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:07:46,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:07:46,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:07:46,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:07:46,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:07:46,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:07:46,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:07:46,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:07:46,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:07:46,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:07:46,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:07:46,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:07:46,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:07:46,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:07:46,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:07:46,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:07:46,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:07:46,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:07:46,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:07:46,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:07:46,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:07:46,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:07:46,184 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:07:46,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:07:46,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:07:46,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:07:46,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:07:46,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:07:46,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:07:46,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:07:46,192 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:07:46,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:07:46,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:07:46,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:07:46,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:07:46,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:07:46,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:07:46,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:07:46,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:07:46,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:07:46,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:07:46,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:07:46,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:07:46,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:07:46,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:07:46,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:07:46,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:07:46,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:07:46,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:07:46,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:07:46,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:07:46,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:07:46,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:07:46,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:07:46,197 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:07:46,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:07:46,197 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:07:46,197 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2022-12-13 15:07:46,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:07:46,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:07:46,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:07:46,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:07:46,406 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:07:46,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-12-13 15:07:48,973 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:07:49,137 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:07:49,138 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-12-13 15:07:49,148 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/data/f8106393e/0b02d5ae5974405ca698211a87ae627f/FLAGff56054f3 [2022-12-13 15:07:49,158 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/data/f8106393e/0b02d5ae5974405ca698211a87ae627f [2022-12-13 15:07:49,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:07:49,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:07:49,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:07:49,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:07:49,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:07:49,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fce3bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49, skipping insertion in model container [2022-12-13 15:07:49,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:07:49,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:07:49,584 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-12-13 15:07:49,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:07:49,676 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:07:49,710 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-12-13 15:07:49,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:07:49,772 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:07:49,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49 WrapperNode [2022-12-13 15:07:49,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:07:49,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:07:49,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:07:49,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:07:49,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,827 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 227 [2022-12-13 15:07:49,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:07:49,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:07:49,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:07:49,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:07:49,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:07:49,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:07:49,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:07:49,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:07:49,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (1/1) ... [2022-12-13 15:07:49,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:07:49,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:07:49,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:07:49,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:07:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:07:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 15:07:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 15:07:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 15:07:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:07:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:07:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 15:07:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 15:07:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:07:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:07:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:07:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:07:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 15:07:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:07:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:07:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:07:49,935 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:07:50,062 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:07:50,064 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:07:50,380 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:07:50,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:07:50,389 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 15:07:50,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:07:50 BoogieIcfgContainer [2022-12-13 15:07:50,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:07:50,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:07:50,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:07:50,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:07:50,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:07:49" (1/3) ... [2022-12-13 15:07:50,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7006ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:07:50, skipping insertion in model container [2022-12-13 15:07:50,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:07:49" (2/3) ... [2022-12-13 15:07:50,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7006ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:07:50, skipping insertion in model container [2022-12-13 15:07:50,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:07:50" (3/3) ... [2022-12-13 15:07:50,400 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2022-12-13 15:07:50,408 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:07:50,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:07:50,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:07:50,419 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:07:50,507 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 15:07:50,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 241 transitions, 504 flow [2022-12-13 15:07:50,673 INFO L130 PetriNetUnfolder]: 54/446 cut-off events. [2022-12-13 15:07:50,673 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-12-13 15:07:50,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 446 events. 54/446 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1750 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 229. Up to 8 conditions per place. [2022-12-13 15:07:50,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 241 transitions, 504 flow [2022-12-13 15:07:50,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 239 transitions, 494 flow [2022-12-13 15:07:50,693 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:07:50,704 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 239 transitions, 494 flow [2022-12-13 15:07:50,707 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 239 transitions, 494 flow [2022-12-13 15:07:50,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 239 transitions, 494 flow [2022-12-13 15:07:50,772 INFO L130 PetriNetUnfolder]: 50/434 cut-off events. [2022-12-13 15:07:50,772 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-12-13 15:07:50,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 434 events. 50/434 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1672 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2022-12-13 15:07:50,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 16992 [2022-12-13 15:07:56,495 INFO L134 LiptonReduction]: Checked pairs total: 23840 [2022-12-13 15:07:56,495 INFO L136 LiptonReduction]: Total number of compositions: 196 [2022-12-13 15:07:56,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:07:56,512 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56e86e49, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:07:56,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 15:07:56,516 INFO L130 PetriNetUnfolder]: 1/27 cut-off events. [2022-12-13 15:07:56,516 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:07:56,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:07:56,516 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 15:07:56,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 15:07:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1295321270, now seen corresponding path program 1 times [2022-12-13 15:07:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:56,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199251465] [2022-12-13 15:07:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:07:56,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:56,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199251465] [2022-12-13 15:07:56,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199251465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:07:56,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:07:56,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:07:56,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41941493] [2022-12-13 15:07:56,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:07:56,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:07:56,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:07:56,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:07:56,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 437 [2022-12-13 15:07:56,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:56,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:07:56,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 437 [2022-12-13 15:07:56,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:07:57,481 INFO L130 PetriNetUnfolder]: 3149/5361 cut-off events. [2022-12-13 15:07:57,481 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-13 15:07:57,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10352 conditions, 5361 events. 3149/5361 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30730 event pairs, 2924 based on Foata normal form. 368/4824 useless extension candidates. Maximal degree in co-relation 9348. Up to 4918 conditions per place. [2022-12-13 15:07:57,513 INFO L137 encePairwiseOnDemand]: 423/437 looper letters, 46 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-12-13 15:07:57,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 222 flow [2022-12-13 15:07:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:07:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:07:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-12-13 15:07:57,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5331807780320366 [2022-12-13 15:07:57,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-12-13 15:07:57,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-12-13 15:07:57,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:07:57,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-12-13 15:07:57,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:57,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:57,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:57,552 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 148 flow. Second operand 3 states and 699 transitions. [2022-12-13 15:07:57,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 222 flow [2022-12-13 15:07:57,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:07:57,561 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 136 flow [2022-12-13 15:07:57,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2022-12-13 15:07:57,567 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2022-12-13 15:07:57,567 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 136 flow [2022-12-13 15:07:57,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:57,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:07:57,568 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 15:07:57,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:07:57,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 15:07:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:57,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1871660473, now seen corresponding path program 1 times [2022-12-13 15:07:57,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:57,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768380290] [2022-12-13 15:07:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:57,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:07:57,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:57,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768380290] [2022-12-13 15:07:57,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768380290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:07:57,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020790122] [2022-12-13 15:07:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:57,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:07:57,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:07:57,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:07:57,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:07:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:57,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:07:57,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:07:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:07:57,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:07:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:07:57,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020790122] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:07:57,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:07:57,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 15:07:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175862243] [2022-12-13 15:07:57,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:07:57,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:07:57,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:57,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:07:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:07:57,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 437 [2022-12-13 15:07:57,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 213.57142857142858) internal successors, (1495), 7 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:57,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:07:57,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 437 [2022-12-13 15:07:57,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:07:58,370 INFO L130 PetriNetUnfolder]: 3149/5364 cut-off events. [2022-12-13 15:07:58,370 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-13 15:07:58,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10368 conditions, 5364 events. 3149/5364 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30732 event pairs, 2924 based on Foata normal form. 0/4459 useless extension candidates. Maximal degree in co-relation 10355. Up to 4918 conditions per place. [2022-12-13 15:07:58,385 INFO L137 encePairwiseOnDemand]: 434/437 looper letters, 46 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2022-12-13 15:07:58,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 250 flow [2022-12-13 15:07:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:07:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:07:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1326 transitions. [2022-12-13 15:07:58,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.505720823798627 [2022-12-13 15:07:58,389 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1326 transitions. [2022-12-13 15:07:58,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1326 transitions. [2022-12-13 15:07:58,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:07:58,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1326 transitions. [2022-12-13 15:07:58,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:58,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 437.0) internal successors, (3059), 7 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:58,401 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 437.0) internal successors, (3059), 7 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:58,401 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 136 flow. Second operand 6 states and 1326 transitions. [2022-12-13 15:07:58,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 250 flow [2022-12-13 15:07:58,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 246 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 15:07:58,406 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 168 flow [2022-12-13 15:07:58,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2022-12-13 15:07:58,407 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2022-12-13 15:07:58,407 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 168 flow [2022-12-13 15:07:58,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 213.57142857142858) internal successors, (1495), 7 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:58,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:07:58,408 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 15:07:58,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:07:58,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 15:07:58,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 15:07:58,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:58,610 INFO L85 PathProgramCache]: Analyzing trace with hash 391996662, now seen corresponding path program 2 times [2022-12-13 15:07:58,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:58,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273342322] [2022-12-13 15:07:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:58,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:07:58,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:58,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273342322] [2022-12-13 15:07:58,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273342322] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:07:58,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508996424] [2022-12-13 15:07:58,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:07:58,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:07:58,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:07:58,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:07:58,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:07:58,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:07:58,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:07:58,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:07:58,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:07:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:07:58,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:07:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:07:58,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508996424] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:07:58,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:07:58,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 15:07:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961962835] [2022-12-13 15:07:58,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:07:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:07:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:07:58,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:07:59,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 437 [2022-12-13 15:07:59,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 168 flow. Second operand has 13 states, 13 states have (on average 213.30769230769232) internal successors, (2773), 13 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:59,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:07:59,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 437 [2022-12-13 15:07:59,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:07:59,532 INFO L130 PetriNetUnfolder]: 3149/5370 cut-off events. [2022-12-13 15:07:59,532 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-12-13 15:07:59,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10405 conditions, 5370 events. 3149/5370 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30719 event pairs, 2924 based on Foata normal form. 6/4472 useless extension candidates. Maximal degree in co-relation 10346. Up to 4918 conditions per place. [2022-12-13 15:07:59,546 INFO L137 encePairwiseOnDemand]: 434/437 looper letters, 46 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2022-12-13 15:07:59,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 318 flow [2022-12-13 15:07:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:07:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:07:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2607 transitions. [2022-12-13 15:07:59,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4971395881006865 [2022-12-13 15:07:59,552 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2607 transitions. [2022-12-13 15:07:59,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2607 transitions. [2022-12-13 15:07:59,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:07:59,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2607 transitions. [2022-12-13 15:07:59,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 217.25) internal successors, (2607), 12 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:59,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 437.0) internal successors, (5681), 13 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:59,566 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 437.0) internal successors, (5681), 13 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:59,567 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 168 flow. Second operand 12 states and 2607 transitions. [2022-12-13 15:07:59,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 318 flow [2022-12-13 15:07:59,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 304 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 15:07:59,570 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 238 flow [2022-12-13 15:07:59,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2022-12-13 15:07:59,571 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2022-12-13 15:07:59,571 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 238 flow [2022-12-13 15:07:59,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 213.30769230769232) internal successors, (2773), 13 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:59,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:07:59,572 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 15:07:59,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:07:59,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:07:59,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 15:07:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash 422556502, now seen corresponding path program 3 times [2022-12-13 15:07:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869786805] [2022-12-13 15:07:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:08:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:08:00,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:08:00,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869786805] [2022-12-13 15:08:00,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869786805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:08:00,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171666569] [2022-12-13 15:08:00,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:08:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:08:00,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:08:00,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:08:00,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:12:05,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 15:12:05,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:12:06,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:12:06,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:12:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:12:06,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:12:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:12:06,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171666569] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:12:06,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:12:06,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-12-13 15:12:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359225654] [2022-12-13 15:12:06,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:12:06,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 15:12:06,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 15:12:06,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 15:12:06,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 437 [2022-12-13 15:12:06,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 238 flow. Second operand has 25 states, 25 states have (on average 213.16) internal successors, (5329), 25 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:06,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:06,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 437 [2022-12-13 15:12:06,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:06,891 INFO L130 PetriNetUnfolder]: 3149/5382 cut-off events. [2022-12-13 15:12:06,891 INFO L131 PetriNetUnfolder]: For 543/543 co-relation queries the response was YES. [2022-12-13 15:12:06,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10489 conditions, 5382 events. 3149/5382 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30764 event pairs, 2924 based on Foata normal form. 12/4490 useless extension candidates. Maximal degree in co-relation 10352. Up to 4918 conditions per place. [2022-12-13 15:12:06,904 INFO L137 encePairwiseOnDemand]: 434/437 looper letters, 46 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2022-12-13 15:12:06,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 76 transitions, 472 flow [2022-12-13 15:12:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 15:12:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 15:12:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5169 transitions. [2022-12-13 15:12:06,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49284897025171626 [2022-12-13 15:12:06,913 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5169 transitions. [2022-12-13 15:12:06,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5169 transitions. [2022-12-13 15:12:06,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:06,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5169 transitions. [2022-12-13 15:12:06,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 215.375) internal successors, (5169), 24 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:06,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 437.0) internal successors, (10925), 25 states have internal predecessors, (10925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:06,943 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 437.0) internal successors, (10925), 25 states have internal predecessors, (10925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:06,943 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 238 flow. Second operand 24 states and 5169 transitions. [2022-12-13 15:12:06,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 76 transitions, 472 flow [2022-12-13 15:12:06,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 76 transitions, 400 flow, removed 31 selfloop flow, removed 5 redundant places. [2022-12-13 15:12:06,949 INFO L231 Difference]: Finished difference. Result has 110 places, 76 transitions, 358 flow [2022-12-13 15:12:06,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=358, PETRI_PLACES=110, PETRI_TRANSITIONS=76} [2022-12-13 15:12:06,950 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2022-12-13 15:12:06,950 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 76 transitions, 358 flow [2022-12-13 15:12:06,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 213.16) internal successors, (5329), 25 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:06,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:06,953 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2022-12-13 15:12:06,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:12:07,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:07,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 15:12:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:07,154 INFO L85 PathProgramCache]: Analyzing trace with hash 634746902, now seen corresponding path program 4 times [2022-12-13 15:12:07,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:07,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956791569] [2022-12-13 15:12:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:07,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:12:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:08,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956791569] [2022-12-13 15:12:08,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956791569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:12:08,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303544931] [2022-12-13 15:12:08,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:12:08,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:08,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:12:08,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:12:08,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:12:08,365 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:12:08,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:12:08,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 15:12:08,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:12:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:12:08,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:12:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:12:08,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303544931] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:12:08,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:12:08,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-12-13 15:12:08,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328460996] [2022-12-13 15:12:08,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:12:08,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 15:12:08,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:12:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 15:12:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 15:12:09,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 437 [2022-12-13 15:12:09,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 76 transitions, 358 flow. Second operand has 49 states, 49 states have (on average 213.08163265306123) internal successors, (10441), 49 states have internal predecessors, (10441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:09,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:12:09,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 437 [2022-12-13 15:12:09,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:12:09,857 INFO L130 PetriNetUnfolder]: 3149/5406 cut-off events. [2022-12-13 15:12:09,858 INFO L131 PetriNetUnfolder]: For 5313/5313 co-relation queries the response was YES. [2022-12-13 15:12:09,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10633 conditions, 5406 events. 3149/5406 cut-off events. For 5313/5313 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30749 event pairs, 2924 based on Foata normal form. 24/4526 useless extension candidates. Maximal degree in co-relation 10364. Up to 4918 conditions per place. [2022-12-13 15:12:09,873 INFO L137 encePairwiseOnDemand]: 434/437 looper letters, 46 selfloop transitions, 47 changer transitions 0/100 dead transitions. [2022-12-13 15:12:09,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 100 transitions, 736 flow [2022-12-13 15:12:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 15:12:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-13 15:12:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10293 transitions. [2022-12-13 15:12:09,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49070366132723114 [2022-12-13 15:12:09,884 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 10293 transitions. [2022-12-13 15:12:09,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 10293 transitions. [2022-12-13 15:12:09,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:12:09,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 10293 transitions. [2022-12-13 15:12:09,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 214.4375) internal successors, (10293), 48 states have internal predecessors, (10293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:09,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 437.0) internal successors, (21413), 49 states have internal predecessors, (21413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:09,918 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 437.0) internal successors, (21413), 49 states have internal predecessors, (21413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:09,919 INFO L175 Difference]: Start difference. First operand has 110 places, 76 transitions, 358 flow. Second operand 48 states and 10293 transitions. [2022-12-13 15:12:09,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 100 transitions, 736 flow [2022-12-13 15:12:09,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 100 transitions, 592 flow, removed 61 selfloop flow, removed 11 redundant places. [2022-12-13 15:12:09,925 INFO L231 Difference]: Finished difference. Result has 170 places, 100 transitions, 598 flow [2022-12-13 15:12:09,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=598, PETRI_PLACES=170, PETRI_TRANSITIONS=100} [2022-12-13 15:12:09,925 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 115 predicate places. [2022-12-13 15:12:09,925 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 100 transitions, 598 flow [2022-12-13 15:12:09,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 213.08163265306123) internal successors, (10441), 49 states have internal predecessors, (10441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:12:09,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:12:09,927 INFO L209 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2022-12-13 15:12:09,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:12:10,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:10,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 15:12:10,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:10,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1661837718, now seen corresponding path program 5 times [2022-12-13 15:12:10,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:12:10,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263325674] [2022-12-13 15:12:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:10,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:12:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:12:12,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:12:12,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263325674] [2022-12-13 15:12:12,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263325674] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:12:12,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868644374] [2022-12-13 15:12:12,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:12:12,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:12:12,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:12:12,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:12:12,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_595ca84f-10a1-4b41-9d07-375fb8a8e444/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process