./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc --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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- 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-5e519f3 [2022-11-02 20:38:40,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:40,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:40,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:40,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:40,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:40,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:40,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:40,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:40,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:40,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:40,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:40,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:40,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:40,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:40,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:40,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:40,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:40,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:40,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:40,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:40,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:40,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:40,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:40,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:40,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:40,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:40,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:40,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:40,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:40,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:40,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:40,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:40,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:40,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:40,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:40,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:40,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:40,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:40,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:40,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:40,158 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:38:40,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:40,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:40,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:40,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:40,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:40,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:40,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:40,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:40,195 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:40,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:40,195 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:38:40,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:40,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:38:40,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:40,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:40,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:40,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:40,197 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:38:40,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:40,197 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:40,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:40,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:40,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:40,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:40,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:40,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:40,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:40,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:40,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:40,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:40,200 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:38:40,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:38:40,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:40,200 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_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2022-11-02 20:38:40,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:40,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:40,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:40,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:40,507 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:40,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-11-02 20:38:40,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/data/208f63c2f/04edb73aedbb4b7791b38b34bc93dc60/FLAG6bf5e19de [2022-11-02 20:38:41,255 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:41,256 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-11-02 20:38:41,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/data/208f63c2f/04edb73aedbb4b7791b38b34bc93dc60/FLAG6bf5e19de [2022-11-02 20:38:41,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/data/208f63c2f/04edb73aedbb4b7791b38b34bc93dc60 [2022-11-02 20:38:41,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:41,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:41,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:41,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:41,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:41,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3715ad12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41, skipping insertion in model container [2022-11-02 20:38:41,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:41,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:38:41,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-11-02 20:38:41,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:42,006 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:38:42,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-11-02 20:38:42,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:42,135 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:38:42,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42 WrapperNode [2022-11-02 20:38:42,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:42,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:42,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:38:42,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:38:42,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,215 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-02 20:38:42,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:42,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:38:42,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:38:42,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:38:42,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:38:42,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:38:42,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:38:42,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:38:42,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:42,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:42,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:38:42,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:38:42,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:38:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:38:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:38:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:38:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:38:42,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:38:42,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:38:42,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:38:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:38:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:38:42,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:38:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:38:42,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:38:42,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:38:42,363 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:38:42,550 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:38:42,563 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:38:43,067 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:38:43,082 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:38:43,083 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:38:43,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:43 BoogieIcfgContainer [2022-11-02 20:38:43,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:38:43,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:38:43,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:38:43,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:38:43,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:41" (1/3) ... [2022-11-02 20:38:43,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8cf764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:43, skipping insertion in model container [2022-11-02 20:38:43,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (2/3) ... [2022-11-02 20:38:43,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8cf764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:43, skipping insertion in model container [2022-11-02 20:38:43,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:43" (3/3) ... [2022-11-02 20:38:43,099 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-11-02 20:38:43,109 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:38:43,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:38:43,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:38:43,122 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:38:43,252 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:38:43,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2022-11-02 20:38:43,421 INFO L130 PetriNetUnfolder]: 10/133 cut-off events. [2022-11-02 20:38:43,422 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:38:43,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2022-11-02 20:38:43,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2022-11-02 20:38:43,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2022-11-02 20:38:43,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:38:43,460 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;@777c6e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:38:43,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:38:43,509 INFO L130 PetriNetUnfolder]: 8/120 cut-off events. [2022-11-02 20:38:43,509 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:38:43,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:43,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:43,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash -297579169, now seen corresponding path program 1 times [2022-11-02 20:38:43,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:43,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61703645] [2022-11-02 20:38:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:43,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:43,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:43,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61703645] [2022-11-02 20:38:43,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61703645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:43,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:43,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:38:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613877435] [2022-11-02 20:38:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:43,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:38:43,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:38:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:38:44,038 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 135 [2022-11-02 20:38:44,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:44,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 135 [2022-11-02 20:38:44,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:44,115 INFO L130 PetriNetUnfolder]: 4/117 cut-off events. [2022-11-02 20:38:44,116 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:38:44,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 117 events. 4/117 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 0 based on Foata normal form. 7/120 useless extension candidates. Maximal degree in co-relation 84. Up to 5 conditions per place. [2022-11-02 20:38:44,119 INFO L137 encePairwiseOnDemand]: 131/135 looper letters, 4 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2022-11-02 20:38:44,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 254 flow [2022-11-02 20:38:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:38:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:38:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2022-11-02 20:38:44,135 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2022-11-02 20:38:44,136 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2022-11-02 20:38:44,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2022-11-02 20:38:44,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:44,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2022-11-02 20:38:44,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,157 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,160 INFO L175 Difference]: Start difference. First operand has 120 places, 121 transitions, 254 flow. Second operand 2 states and 258 transitions. [2022-11-02 20:38:44,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 254 flow [2022-11-02 20:38:44,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:38:44,170 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 238 flow [2022-11-02 20:38:44,172 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2022-11-02 20:38:44,176 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2022-11-02 20:38:44,177 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 238 flow [2022-11-02 20:38:44,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:44,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:44,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:44,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -494092674, now seen corresponding path program 1 times [2022-11-02 20:38:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:44,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620841121] [2022-11-02 20:38:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:44,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620841121] [2022-11-02 20:38:44,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620841121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:44,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:44,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:38:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220033502] [2022-11-02 20:38:44,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:44,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:44,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:44,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:44,436 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2022-11-02 20:38:44,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:44,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2022-11-02 20:38:44,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:44,524 INFO L130 PetriNetUnfolder]: 18/200 cut-off events. [2022-11-02 20:38:44,524 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:38:44,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 200 events. 18/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 550 event pairs, 3 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 240. Up to 22 conditions per place. [2022-11-02 20:38:44,532 INFO L137 encePairwiseOnDemand]: 132/135 looper letters, 12 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2022-11-02 20:38:44,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 275 flow [2022-11-02 20:38:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:38:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-11-02 20:38:44,541 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9185185185185185 [2022-11-02 20:38:44,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-11-02 20:38:44,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-11-02 20:38:44,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:44,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-11-02 20:38:44,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,555 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 238 flow. Second operand 3 states and 372 transitions. [2022-11-02 20:38:44,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 275 flow [2022-11-02 20:38:44,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:38:44,562 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 250 flow [2022-11-02 20:38:44,562 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2022-11-02 20:38:44,563 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2022-11-02 20:38:44,563 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 250 flow [2022-11-02 20:38:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:44,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:44,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:38:44,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash -963664370, now seen corresponding path program 1 times [2022-11-02 20:38:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:44,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758516379] [2022-11-02 20:38:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:44,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:44,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:44,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758516379] [2022-11-02 20:38:44,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758516379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:44,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969708049] [2022-11-02 20:38:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:44,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:44,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:44,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:44,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:38:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:38:44,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:38:45,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:45,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969708049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:45,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:45,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 20:38:45,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612887078] [2022-11-02 20:38:45,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:45,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:45,042 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 135 [2022-11-02 20:38:45,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:45,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 135 [2022-11-02 20:38:45,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:45,142 INFO L130 PetriNetUnfolder]: 20/195 cut-off events. [2022-11-02 20:38:45,143 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-02 20:38:45,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 195 events. 20/195 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 551 event pairs, 7 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 241. Up to 28 conditions per place. [2022-11-02 20:38:45,145 INFO L137 encePairwiseOnDemand]: 132/135 looper letters, 15 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2022-11-02 20:38:45,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 295 flow [2022-11-02 20:38:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:38:45,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2022-11-02 20:38:45,147 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2022-11-02 20:38:45,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2022-11-02 20:38:45,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2022-11-02 20:38:45,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:45,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2022-11-02 20:38:45,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,152 INFO L175 Difference]: Start difference. First operand has 120 places, 118 transitions, 250 flow. Second operand 3 states and 369 transitions. [2022-11-02 20:38:45,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 295 flow [2022-11-02 20:38:45,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:38:45,158 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 260 flow [2022-11-02 20:38:45,159 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2022-11-02 20:38:45,161 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2022-11-02 20:38:45,162 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 260 flow [2022-11-02 20:38:45,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:45,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:45,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:45,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:45,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash -786293827, now seen corresponding path program 1 times [2022-11-02 20:38:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:45,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061930018] [2022-11-02 20:38:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:45,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:38:45,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:45,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061930018] [2022-11-02 20:38:45,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061930018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256575129] [2022-11-02 20:38:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:45,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:45,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:45,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:45,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:38:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:38:45,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:38:45,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:38:45,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256575129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:45,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:45,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:38:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737030321] [2022-11-02 20:38:45,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:45,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:38:45,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:38:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:38:45,908 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2022-11-02 20:38:45,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:45,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2022-11-02 20:38:45,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:46,105 INFO L130 PetriNetUnfolder]: 26/229 cut-off events. [2022-11-02 20:38:46,106 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:38:46,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 229 events. 26/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 544 event pairs, 4 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 312. Up to 17 conditions per place. [2022-11-02 20:38:46,109 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 18 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2022-11-02 20:38:46,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 353 flow [2022-11-02 20:38:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:38:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:38:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1091 transitions. [2022-11-02 20:38:46,115 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8979423868312757 [2022-11-02 20:38:46,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1091 transitions. [2022-11-02 20:38:46,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1091 transitions. [2022-11-02 20:38:46,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:46,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1091 transitions. [2022-11-02 20:38:46,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.22222222222223) internal successors, (1091), 9 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,124 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,124 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 260 flow. Second operand 9 states and 1091 transitions. [2022-11-02 20:38:46,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 353 flow [2022-11-02 20:38:46,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:38:46,134 INFO L231 Difference]: Finished difference. Result has 132 places, 125 transitions, 308 flow [2022-11-02 20:38:46,134 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2022-11-02 20:38:46,136 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2022-11-02 20:38:46,137 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 308 flow [2022-11-02 20:38:46,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:46,139 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:46,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:46,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:46,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:46,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1291208103, now seen corresponding path program 2 times [2022-11-02 20:38:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:46,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843744499] [2022-11-02 20:38:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:46,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:38:46,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843744499] [2022-11-02 20:38:46,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843744499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112786518] [2022-11-02 20:38:46,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:38:46,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:46,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:46,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:46,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:38:46,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:38:46,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:46,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:38:46,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:38:46,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:46,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112786518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:46,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:46,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-02 20:38:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027882892] [2022-11-02 20:38:46,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:46,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:38:46,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:38:46,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:38:46,848 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 135 [2022-11-02 20:38:46,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:46,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:46,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 135 [2022-11-02 20:38:46,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:47,219 INFO L130 PetriNetUnfolder]: 307/1229 cut-off events. [2022-11-02 20:38:47,220 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-02 20:38:47,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 1229 events. 307/1229 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7003 event pairs, 41 based on Foata normal form. 0/1117 useless extension candidates. Maximal degree in co-relation 1942. Up to 186 conditions per place. [2022-11-02 20:38:47,232 INFO L137 encePairwiseOnDemand]: 126/135 looper letters, 32 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2022-11-02 20:38:47,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 484 flow [2022-11-02 20:38:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:38:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:38:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2022-11-02 20:38:47,235 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9005291005291005 [2022-11-02 20:38:47,236 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2022-11-02 20:38:47,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2022-11-02 20:38:47,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:47,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2022-11-02 20:38:47,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,243 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,243 INFO L175 Difference]: Start difference. First operand has 132 places, 125 transitions, 308 flow. Second operand 7 states and 851 transitions. [2022-11-02 20:38:47,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 484 flow [2022-11-02 20:38:47,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 478 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 20:38:47,253 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 442 flow [2022-11-02 20:38:47,254 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2022-11-02 20:38:47,256 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2022-11-02 20:38:47,256 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 442 flow [2022-11-02 20:38:47,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:47,257 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:47,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:47,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:47,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:47,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:47,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1443706115, now seen corresponding path program 3 times [2022-11-02 20:38:47,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:47,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819451877] [2022-11-02 20:38:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:47,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:38:47,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:47,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819451877] [2022-11-02 20:38:47,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819451877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:47,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685287952] [2022-11-02 20:38:47,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:38:47,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:47,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:47,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:47,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:38:47,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 20:38:47,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:47,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:38:47,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:38:48,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:38:48,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685287952] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:48,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:48,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:38:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193563981] [2022-11-02 20:38:48,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:48,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:38:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:38:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:38:48,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2022-11-02 20:38:48,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 442 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:48,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:48,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2022-11-02 20:38:48,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:48,518 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([366] thread1EXIT-->L915-2: Formula: (and (= 0 v_thread1Thread1of1ForFork1_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem16#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread1Thread1of1ForFork1_thidvar0_4)) InVars {ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_4, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_4, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_4} AuxVars[] AssignedVars[][151], [26#L897true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), 119#L915-2true, Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), 1954#(< thread2Thread1of1ForFork0_~j~0 4), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), Black: 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), 135#true, 1117#(<= 1 ~num~0), 439#true]) [2022-11-02 20:38:48,518 INFO L383 tUnfolder$Statistics]: this new event has 144 ancestors and is cut-off event [2022-11-02 20:38:48,518 INFO L386 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-11-02 20:38:48,518 INFO L386 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-11-02 20:38:48,518 INFO L386 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-11-02 20:38:48,549 INFO L130 PetriNetUnfolder]: 327/1513 cut-off events. [2022-11-02 20:38:48,549 INFO L131 PetriNetUnfolder]: For 797/886 co-relation queries the response was YES. [2022-11-02 20:38:48,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3136 conditions, 1513 events. 327/1513 cut-off events. For 797/886 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10121 event pairs, 31 based on Foata normal form. 54/1519 useless extension candidates. Maximal degree in co-relation 3122. Up to 173 conditions per place. [2022-11-02 20:38:48,565 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 22 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2022-11-02 20:38:48,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 160 transitions, 547 flow [2022-11-02 20:38:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:38:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:38:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1077 transitions. [2022-11-02 20:38:48,569 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8864197530864197 [2022-11-02 20:38:48,569 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1077 transitions. [2022-11-02 20:38:48,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1077 transitions. [2022-11-02 20:38:48,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:48,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1077 transitions. [2022-11-02 20:38:48,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:48,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:48,577 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:48,577 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 442 flow. Second operand 9 states and 1077 transitions. [2022-11-02 20:38:48,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 160 transitions, 547 flow [2022-11-02 20:38:48,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 160 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:38:48,588 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 492 flow [2022-11-02 20:38:48,588 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=492, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2022-11-02 20:38:48,591 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 34 predicate places. [2022-11-02 20:38:48,591 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 492 flow [2022-11-02 20:38:48,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:48,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:48,592 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:48,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:48,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:48,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash 191864153, now seen corresponding path program 4 times [2022-11-02 20:38:48,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:48,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941091442] [2022-11-02 20:38:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:48,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-02 20:38:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:49,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941091442] [2022-11-02 20:38:49,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941091442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:49,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:49,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:38:49,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034993981] [2022-11-02 20:38:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:49,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:49,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:49,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:49,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 135 [2022-11-02 20:38:49,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:49,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 135 [2022-11-02 20:38:49,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:49,258 INFO L130 PetriNetUnfolder]: 125/887 cut-off events. [2022-11-02 20:38:49,259 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-11-02 20:38:49,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 887 events. 125/887 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4645 event pairs, 14 based on Foata normal form. 92/979 useless extension candidates. Maximal degree in co-relation 1759. Up to 127 conditions per place. [2022-11-02 20:38:49,268 INFO L137 encePairwiseOnDemand]: 127/135 looper letters, 16 selfloop transitions, 8 changer transitions 0/141 dead transitions. [2022-11-02 20:38:49,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 141 transitions, 488 flow [2022-11-02 20:38:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:38:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-11-02 20:38:49,270 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-11-02 20:38:49,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-11-02 20:38:49,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-11-02 20:38:49,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:49,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-11-02 20:38:49,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,274 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 492 flow. Second operand 3 states and 349 transitions. [2022-11-02 20:38:49,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 141 transitions, 488 flow [2022-11-02 20:38:49,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 141 transitions, 468 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-02 20:38:49,283 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 430 flow [2022-11-02 20:38:49,283 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-11-02 20:38:49,284 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 32 predicate places. [2022-11-02 20:38:49,284 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 430 flow [2022-11-02 20:38:49,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:49,284 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:49,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:38:49,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:49,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:49,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1063103093, now seen corresponding path program 5 times [2022-11-02 20:38:49,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:49,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124276150] [2022-11-02 20:38:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:49,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:38:49,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:49,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124276150] [2022-11-02 20:38:49,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124276150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:49,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074057768] [2022-11-02 20:38:49,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:38:49,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:49,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:49,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:49,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:38:49,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 20:38:49,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:49,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:38:49,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:38:49,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:38:50,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074057768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:50,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:50,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:38:50,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761601281] [2022-11-02 20:38:50,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:50,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:38:50,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:50,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:38:50,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:38:50,046 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2022-11-02 20:38:50,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 430 flow. Second operand has 11 states, 11 states have (on average 118.54545454545455) internal successors, (1304), 11 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:50,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:50,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2022-11-02 20:38:50,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:50,409 INFO L130 PetriNetUnfolder]: 178/1187 cut-off events. [2022-11-02 20:38:50,409 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-02 20:38:50,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1187 events. 178/1187 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6910 event pairs, 14 based on Foata normal form. 6/1182 useless extension candidates. Maximal degree in co-relation 2365. Up to 156 conditions per place. [2022-11-02 20:38:50,418 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 27 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2022-11-02 20:38:50,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 572 flow [2022-11-02 20:38:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:38:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:38:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1432 transitions. [2022-11-02 20:38:50,423 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8839506172839506 [2022-11-02 20:38:50,423 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1432 transitions. [2022-11-02 20:38:50,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1432 transitions. [2022-11-02 20:38:50,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:50,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1432 transitions. [2022-11-02 20:38:50,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.33333333333333) internal successors, (1432), 12 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:50,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:50,432 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:50,432 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 430 flow. Second operand 12 states and 1432 transitions. [2022-11-02 20:38:50,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 572 flow [2022-11-02 20:38:50,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 158 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:38:50,438 INFO L231 Difference]: Finished difference. Result has 166 places, 143 transitions, 484 flow [2022-11-02 20:38:50,439 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=484, PETRI_PLACES=166, PETRI_TRANSITIONS=143} [2022-11-02 20:38:50,439 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 46 predicate places. [2022-11-02 20:38:50,440 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 143 transitions, 484 flow [2022-11-02 20:38:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.54545454545455) internal successors, (1304), 11 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:50,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:50,441 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:50,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:50,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:38:50,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2061368960, now seen corresponding path program 6 times [2022-11-02 20:38:50,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:50,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927987532] [2022-11-02 20:38:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:50,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 20:38:50,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:50,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927987532] [2022-11-02 20:38:50,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927987532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:50,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488484590] [2022-11-02 20:38:50,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:38:50,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:50,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:50,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:50,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:38:51,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 20:38:51,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:51,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:38:51,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-02 20:38:51,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:51,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488484590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:51,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:51,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2022-11-02 20:38:51,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963270027] [2022-11-02 20:38:51,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:51,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:38:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:38:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:38:51,395 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 135 [2022-11-02 20:38:51,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 143 transitions, 484 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:51,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:51,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 135 [2022-11-02 20:38:51,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:51,730 INFO L130 PetriNetUnfolder]: 164/1206 cut-off events. [2022-11-02 20:38:51,731 INFO L131 PetriNetUnfolder]: For 611/611 co-relation queries the response was YES. [2022-11-02 20:38:51,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 1206 events. 164/1206 cut-off events. For 611/611 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6926 event pairs, 13 based on Foata normal form. 18/1220 useless extension candidates. Maximal degree in co-relation 2590. Up to 161 conditions per place. [2022-11-02 20:38:51,743 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 18 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2022-11-02 20:38:51,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 152 transitions, 581 flow [2022-11-02 20:38:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:38:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:38:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 931 transitions. [2022-11-02 20:38:51,746 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.862037037037037 [2022-11-02 20:38:51,747 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 931 transitions. [2022-11-02 20:38:51,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 931 transitions. [2022-11-02 20:38:51,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:51,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 931 transitions. [2022-11-02 20:38:51,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:51,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:51,753 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:51,754 INFO L175 Difference]: Start difference. First operand has 166 places, 143 transitions, 484 flow. Second operand 8 states and 931 transitions. [2022-11-02 20:38:51,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 152 transitions, 581 flow [2022-11-02 20:38:51,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 152 transitions, 565 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-02 20:38:51,761 INFO L231 Difference]: Finished difference. Result has 169 places, 145 transitions, 531 flow [2022-11-02 20:38:51,762 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=169, PETRI_TRANSITIONS=145} [2022-11-02 20:38:51,762 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 49 predicate places. [2022-11-02 20:38:51,762 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 145 transitions, 531 flow [2022-11-02 20:38:51,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:51,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:51,763 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:51,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:51,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:38:51,986 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:51,986 INFO L85 PathProgramCache]: Analyzing trace with hash 731212494, now seen corresponding path program 7 times [2022-11-02 20:38:51,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:51,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103347809] [2022-11-02 20:38:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:51,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:38:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:52,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103347809] [2022-11-02 20:38:52,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103347809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:52,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67689198] [2022-11-02 20:38:52,286 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:38:52,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:52,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:52,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:52,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:38:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:52,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:38:52,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:38:52,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:38:52,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67689198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:52,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:52,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:38:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173310734] [2022-11-02 20:38:52,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:52,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:38:52,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:52,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:38:52,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:38:52,834 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2022-11-02 20:38:52,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 145 transitions, 531 flow. Second operand has 11 states, 11 states have (on average 120.18181818181819) internal successors, (1322), 11 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:52,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:52,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2022-11-02 20:38:52,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:53,234 INFO L130 PetriNetUnfolder]: 165/1290 cut-off events. [2022-11-02 20:38:53,235 INFO L131 PetriNetUnfolder]: For 807/812 co-relation queries the response was YES. [2022-11-02 20:38:53,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1290 events. 165/1290 cut-off events. For 807/812 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7230 event pairs, 8 based on Foata normal form. 6/1294 useless extension candidates. Maximal degree in co-relation 2919. Up to 133 conditions per place. [2022-11-02 20:38:53,249 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 16 selfloop transitions, 12 changer transitions 0/155 dead transitions. [2022-11-02 20:38:53,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 155 transitions, 627 flow [2022-11-02 20:38:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:38:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:38:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1445 transitions. [2022-11-02 20:38:53,254 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8919753086419753 [2022-11-02 20:38:53,254 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1445 transitions. [2022-11-02 20:38:53,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1445 transitions. [2022-11-02 20:38:53,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:53,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1445 transitions. [2022-11-02 20:38:53,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.41666666666667) internal successors, (1445), 12 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:53,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:53,264 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:53,265 INFO L175 Difference]: Start difference. First operand has 169 places, 145 transitions, 531 flow. Second operand 12 states and 1445 transitions. [2022-11-02 20:38:53,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 155 transitions, 627 flow [2022-11-02 20:38:53,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 155 transitions, 603 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-02 20:38:53,275 INFO L231 Difference]: Finished difference. Result has 178 places, 149 transitions, 569 flow [2022-11-02 20:38:53,276 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=569, PETRI_PLACES=178, PETRI_TRANSITIONS=149} [2022-11-02 20:38:53,277 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 58 predicate places. [2022-11-02 20:38:53,277 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 149 transitions, 569 flow [2022-11-02 20:38:53,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 120.18181818181819) internal successors, (1322), 11 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:53,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:38:53,279 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:53,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-02 20:38:53,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:38:53,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:38:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash 897291950, now seen corresponding path program 8 times [2022-11-02 20:38:53,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:53,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743198549] [2022-11-02 20:38:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:53,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:54,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:54,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743198549] [2022-11-02 20:38:54,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743198549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:54,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091816931] [2022-11-02 20:38:54,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:38:54,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:54,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:54,746 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:54,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:38:55,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:38:55,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:55,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:38:55,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 5 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:56,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:57,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091816931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:57,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:57,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 43 [2022-11-02 20:38:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154000791] [2022-11-02 20:38:57,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:57,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 20:38:57,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:57,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 20:38:57,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1677, Unknown=0, NotChecked=0, Total=1806 [2022-11-02 20:38:57,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 135 [2022-11-02 20:38:57,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 149 transitions, 569 flow. Second operand has 43 states, 43 states have (on average 113.93023255813954) internal successors, (4899), 43 states have internal predecessors, (4899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:57,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:38:57,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 135 [2022-11-02 20:38:57,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:38:58,249 INFO L130 PetriNetUnfolder]: 162/1287 cut-off events. [2022-11-02 20:38:58,249 INFO L131 PetriNetUnfolder]: For 879/879 co-relation queries the response was YES. [2022-11-02 20:38:58,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2826 conditions, 1287 events. 162/1287 cut-off events. For 879/879 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7389 event pairs, 7 based on Foata normal form. 13/1297 useless extension candidates. Maximal degree in co-relation 2800. Up to 130 conditions per place. [2022-11-02 20:38:58,258 INFO L137 encePairwiseOnDemand]: 126/135 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2022-11-02 20:38:58,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 159 transitions, 669 flow [2022-11-02 20:38:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:38:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:38:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2280 transitions. [2022-11-02 20:38:58,264 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-11-02 20:38:58,264 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2280 transitions. [2022-11-02 20:38:58,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2280 transitions. [2022-11-02 20:38:58,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:38:58,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2280 transitions. [2022-11-02 20:38:58,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:58,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 135.0) internal successors, (2835), 21 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:58,279 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 135.0) internal successors, (2835), 21 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:58,280 INFO L175 Difference]: Start difference. First operand has 178 places, 149 transitions, 569 flow. Second operand 20 states and 2280 transitions. [2022-11-02 20:38:58,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 159 transitions, 669 flow [2022-11-02 20:38:58,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 159 transitions, 651 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-02 20:38:58,288 INFO L231 Difference]: Finished difference. Result has 188 places, 0 transitions, 0 flow [2022-11-02 20:38:58,289 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=188, PETRI_TRANSITIONS=0} [2022-11-02 20:38:58,289 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 68 predicate places. [2022-11-02 20:38:58,289 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 0 transitions, 0 flow [2022-11-02 20:38:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 113.93023255813954) internal successors, (4899), 43 states have internal predecessors, (4899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:58,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-02 20:38:58,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-02 20:38:58,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-02 20:38:58,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:58,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:38:58,514 INFO L444 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-11-02 20:38:58,517 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:38:58,517 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:38:58,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:38:58 BasicIcfg [2022-11-02 20:38:58,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:38:58,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:38:58,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:38:58,526 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:38:58,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:43" (3/4) ... [2022-11-02 20:38:58,530 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:38:58,536 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:38:58,537 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:38:58,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-02 20:38:58,543 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-02 20:38:58,543 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:38:58,543 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:38:58,585 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:38:58,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:38:58,586 INFO L158 Benchmark]: Toolchain (without parser) took 17084.51ms. Allocated memory was 100.7MB in the beginning and 281.0MB in the end (delta: 180.4MB). Free memory was 60.9MB in the beginning and 171.6MB in the end (delta: -110.7MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2022-11-02 20:38:58,587 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 78.9MB in the beginning and 78.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:38:58,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.33ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 59.9MB in the end (delta: 803.1kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:38:58,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.32ms. Allocated memory is still 100.7MB. Free memory was 59.9MB in the beginning and 57.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:38:58,588 INFO L158 Benchmark]: Boogie Preprocessor took 29.11ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 55.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:38:58,588 INFO L158 Benchmark]: RCFGBuilder took 834.96ms. Allocated memory is still 100.7MB. Free memory was 55.8MB in the beginning and 74.3MB in the end (delta: -18.5MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-02 20:38:58,589 INFO L158 Benchmark]: TraceAbstraction took 15434.65ms. Allocated memory was 100.7MB in the beginning and 281.0MB in the end (delta: 180.4MB). Free memory was 73.3MB in the beginning and 174.4MB in the end (delta: -101.1MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. [2022-11-02 20:38:58,589 INFO L158 Benchmark]: Witness Printer took 59.60ms. Allocated memory is still 281.0MB. Free memory was 174.4MB in the beginning and 171.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:38:58,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 78.9MB in the beginning and 78.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.33ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 59.9MB in the end (delta: 803.1kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.32ms. Allocated memory is still 100.7MB. Free memory was 59.9MB in the beginning and 57.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.11ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 55.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 834.96ms. Allocated memory is still 100.7MB. Free memory was 55.8MB in the beginning and 74.3MB in the end (delta: -18.5MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15434.65ms. Allocated memory was 100.7MB in the beginning and 281.0MB in the end (delta: 180.4MB). Free memory was 73.3MB in the beginning and 174.4MB in the end (delta: -101.1MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. * Witness Printer took 59.60ms. Allocated memory is still 281.0MB. Free memory was 174.4MB in the beginning and 171.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 171 locations, 3 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: 15.2s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 199 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 199 mSDsluCounter, 199 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 433 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1138 IncrementalHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 58 mSDtfsCounter, 1138 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1973 GetRequests, 1830 SyntacticMatches, 17 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=10, InterpolantAutomatonStates: 88, 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: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 2597 NumberOfCodeBlocks, 2497 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3313 ConstructedInterpolants, 0 QuantifiedInterpolants, 8612 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2681 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 707/1491 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:38:58,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bad3eb1-78fa-4b20-ad11-5fcc47f723db/bin/uautomizer-Dbtcem3rbc/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 Result: TRUE