./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R --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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:16:32,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:16:32,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:16:32,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:16:32,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:16:32,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:16:32,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:16:32,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:16:32,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:16:32,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:16:32,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:16:32,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:16:32,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:16:32,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:16:32,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:16:32,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:16:32,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:16:32,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:16:32,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:16:32,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:16:32,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:16:32,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:16:32,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:16:32,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:16:32,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:16:32,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:16:32,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:16:32,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:16:32,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:16:32,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:16:32,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:16:32,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:16:32,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:16:32,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:16:32,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:16:32,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:16:32,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:16:32,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:16:32,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:16:32,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:16:32,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:16:32,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:16:32,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:16:32,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:16:32,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:16:32,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:16:32,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:16:32,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:16:32,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:16:32,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:16:32,214 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:16:32,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:16:32,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:16:32,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:16:32,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:16:32,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:16:32,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:16:32,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:16:32,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:16:32,217 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:16:32,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:16:32,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:16:32,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:16:32,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:16:32,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:16:32,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:16:32,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:16:32,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:16:32,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:16:32,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:16:32,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:16:32,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:16:32,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:16:32,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:16:32,221 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:16:32,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:16:32,221 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2022-11-25 17:16:32,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:16:32,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:16:32,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:16:32,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:16:32,529 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:16:32,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-25 17:16:35,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:16:35,985 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:16:35,992 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-25 17:16:36,013 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/data/424264b57/77245790c6e6436ba0a7fa764fab062a/FLAG15d213e43 [2022-11-25 17:16:36,035 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/data/424264b57/77245790c6e6436ba0a7fa764fab062a [2022-11-25 17:16:36,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:16:36,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:16:36,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:16:36,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:16:36,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:16:36,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6f11fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36, skipping insertion in model container [2022-11-25 17:16:36,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:16:36,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:16:36,651 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-25 17:16:36,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:16:36,674 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:16:36,750 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-25 17:16:36,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:16:36,812 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:16:36,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36 WrapperNode [2022-11-25 17:16:36,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:16:36,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:16:36,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:16:36,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:16:36,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,859 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-25 17:16:36,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:16:36,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:16:36,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:16:36,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:16:36,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,921 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:16:36,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:16:36,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:16:36,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:16:36,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (1/1) ... [2022-11-25 17:16:36,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:16:36,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:36,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:16:37,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:16:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:16:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:16:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 17:16:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:16:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:16:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:16:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:16:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:16:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:16:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:16:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:16:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:16:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:16:37,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:16:37,030 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:16:37,211 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:16:37,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:16:37,507 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:16:37,514 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:16:37,515 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:16:37,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:16:37 BoogieIcfgContainer [2022-11-25 17:16:37,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:16:37,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:16:37,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:16:37,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:16:37,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:16:36" (1/3) ... [2022-11-25 17:16:37,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cace986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:16:37, skipping insertion in model container [2022-11-25 17:16:37,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:16:36" (2/3) ... [2022-11-25 17:16:37,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cace986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:16:37, skipping insertion in model container [2022-11-25 17:16:37,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:16:37" (3/3) ... [2022-11-25 17:16:37,525 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-11-25 17:16:37,534 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:16:37,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:16:37,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:16:37,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:16:37,635 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:16:37,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2022-11-25 17:16:37,804 INFO L130 PetriNetUnfolder]: 10/133 cut-off events. [2022-11-25 17:16:37,804 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:16:37,810 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 139 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. [2022-11-25 17:16:37,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2022-11-25 17:16:37,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2022-11-25 17:16:37,825 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:16:37,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 121 transitions, 254 flow [2022-11-25 17:16:37,854 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 121 transitions, 254 flow [2022-11-25 17:16:37,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 121 transitions, 254 flow [2022-11-25 17:16:37,914 INFO L130 PetriNetUnfolder]: 8/121 cut-off events. [2022-11-25 17:16:37,915 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:16:37,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 121 events. 8/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-11-25 17:16:37,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 1922 [2022-11-25 17:16:45,576 INFO L134 LiptonReduction]: Checked pairs total: 4138 [2022-11-25 17:16:45,577 INFO L136 LiptonReduction]: Total number of compositions: 98 [2022-11-25 17:16:45,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:16:45,599 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;@623f6511, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:16:45,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 17:16:45,608 INFO L130 PetriNetUnfolder]: 5/29 cut-off events. [2022-11-25 17:16:45,608 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:16:45,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:45,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:45,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1531689719, now seen corresponding path program 1 times [2022-11-25 17:16:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:45,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073227608] [2022-11-25 17:16:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:45,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:45,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:45,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073227608] [2022-11-25 17:16:45,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073227608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:45,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:45,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:16:45,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089373670] [2022-11-25 17:16:45,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:45,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:45,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:46,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 233 [2022-11-25 17:16:46,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:46,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 233 [2022-11-25 17:16:46,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:46,192 INFO L130 PetriNetUnfolder]: 151/372 cut-off events. [2022-11-25 17:16:46,192 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-25 17:16:46,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 372 events. 151/372 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1818 event pairs, 57 based on Foata normal form. 24/334 useless extension candidates. Maximal degree in co-relation 568. Up to 163 conditions per place. [2022-11-25 17:16:46,201 INFO L137 encePairwiseOnDemand]: 229/233 looper letters, 30 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-11-25 17:16:46,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 161 flow [2022-11-25 17:16:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2022-11-25 17:16:46,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5693848354792561 [2022-11-25 17:16:46,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2022-11-25 17:16:46,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2022-11-25 17:16:46,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:46,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2022-11-25 17:16:46,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,235 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 72 flow. Second operand 3 states and 398 transitions. [2022-11-25 17:16:46,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 161 flow [2022-11-25 17:16:46,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:16:46,240 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 74 flow [2022-11-25 17:16:46,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2022-11-25 17:16:46,245 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2022-11-25 17:16:46,245 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 74 flow [2022-11-25 17:16:46,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:46,246 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:46,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:16:46,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash -114524577, now seen corresponding path program 1 times [2022-11-25 17:16:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:46,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576957350] [2022-11-25 17:16:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:46,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:46,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:46,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576957350] [2022-11-25 17:16:46,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576957350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:46,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:46,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:16:46,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102512171] [2022-11-25 17:16:46,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:46,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:46,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:46,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:46,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 233 [2022-11-25 17:16:46,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:46,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 233 [2022-11-25 17:16:46,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:46,506 INFO L130 PetriNetUnfolder]: 237/488 cut-off events. [2022-11-25 17:16:46,506 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-25 17:16:46,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 488 events. 237/488 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2089 event pairs, 87 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 484. Up to 237 conditions per place. [2022-11-25 17:16:46,509 INFO L137 encePairwiseOnDemand]: 230/233 looper letters, 32 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2022-11-25 17:16:46,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 179 flow [2022-11-25 17:16:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2022-11-25 17:16:46,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5665236051502146 [2022-11-25 17:16:46,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2022-11-25 17:16:46,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2022-11-25 17:16:46,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:46,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2022-11-25 17:16:46,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,522 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 74 flow. Second operand 3 states and 396 transitions. [2022-11-25 17:16:46,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 179 flow [2022-11-25 17:16:46,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:46,526 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2022-11-25 17:16:46,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2022-11-25 17:16:46,527 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2022-11-25 17:16:46,527 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2022-11-25 17:16:46,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:46,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:46,528 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:46,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:16:46,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:46,533 INFO L85 PathProgramCache]: Analyzing trace with hash -683372329, now seen corresponding path program 1 times [2022-11-25 17:16:46,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:46,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941469653] [2022-11-25 17:16:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:46,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:46,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941469653] [2022-11-25 17:16:46,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941469653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:46,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103046291] [2022-11-25 17:16:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:46,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:46,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:46,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:46,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:16:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:46,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:16:46,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:46,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:16:47,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103046291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:16:47,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:16:47,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-25 17:16:47,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091123502] [2022-11-25 17:16:47,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:16:47,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:16:47,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:16:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:16:47,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 233 [2022-11-25 17:16:47,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:47,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 233 [2022-11-25 17:16:47,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:47,287 INFO L130 PetriNetUnfolder]: 345/818 cut-off events. [2022-11-25 17:16:47,287 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-11-25 17:16:47,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 818 events. 345/818 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4099 event pairs, 61 based on Foata normal form. 36/782 useless extension candidates. Maximal degree in co-relation 538. Up to 167 conditions per place. [2022-11-25 17:16:47,294 INFO L137 encePairwiseOnDemand]: 229/233 looper letters, 53 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2022-11-25 17:16:47,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 67 transitions, 307 flow [2022-11-25 17:16:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:16:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:16:47,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 656 transitions. [2022-11-25 17:16:47,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5630901287553648 [2022-11-25 17:16:47,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 656 transitions. [2022-11-25 17:16:47,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 656 transitions. [2022-11-25 17:16:47,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:47,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 656 transitions. [2022-11-25 17:16:47,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.2) internal successors, (656), 5 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,303 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 5 states and 656 transitions. [2022-11-25 17:16:47,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 67 transitions, 307 flow [2022-11-25 17:16:47,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 67 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:47,309 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 112 flow [2022-11-25 17:16:47,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2022-11-25 17:16:47,311 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2022-11-25 17:16:47,311 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 112 flow [2022-11-25 17:16:47,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.5) internal successors, (753), 6 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:47,312 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:47,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:47,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:47,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 509525341, now seen corresponding path program 2 times [2022-11-25 17:16:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:47,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754450195] [2022-11-25 17:16:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:16:47,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:47,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754450195] [2022-11-25 17:16:47,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754450195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:47,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:47,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:16:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737061882] [2022-11-25 17:16:47,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:47,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:47,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:47,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 233 [2022-11-25 17:16:47,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:47,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 233 [2022-11-25 17:16:47,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:47,848 INFO L130 PetriNetUnfolder]: 711/1330 cut-off events. [2022-11-25 17:16:47,849 INFO L131 PetriNetUnfolder]: For 692/692 co-relation queries the response was YES. [2022-11-25 17:16:47,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 1330 events. 711/1330 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6342 event pairs, 237 based on Foata normal form. 26/1293 useless extension candidates. Maximal degree in co-relation 1251. Up to 811 conditions per place. [2022-11-25 17:16:47,856 INFO L137 encePairwiseOnDemand]: 228/233 looper letters, 39 selfloop transitions, 3 changer transitions 3/50 dead transitions. [2022-11-25 17:16:47,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 269 flow [2022-11-25 17:16:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-11-25 17:16:47,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5636623748211731 [2022-11-25 17:16:47,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-11-25 17:16:47,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-11-25 17:16:47,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:47,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-11-25 17:16:47,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,863 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 112 flow. Second operand 3 states and 394 transitions. [2022-11-25 17:16:47,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 269 flow [2022-11-25 17:16:47,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 258 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:47,866 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 130 flow [2022-11-25 17:16:47,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2022-11-25 17:16:47,867 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2022-11-25 17:16:47,867 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 130 flow [2022-11-25 17:16:47,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:47,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:47,868 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:47,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:16:47,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1396604603, now seen corresponding path program 3 times [2022-11-25 17:16:47,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:47,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623996359] [2022-11-25 17:16:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:47,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:16:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:48,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623996359] [2022-11-25 17:16:48,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623996359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:48,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:48,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:16:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219836133] [2022-11-25 17:16:48,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:48,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:16:48,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 233 [2022-11-25 17:16:48,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 130 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) [2022-11-25 17:16:48,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:48,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 233 [2022-11-25 17:16:48,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:48,255 INFO L130 PetriNetUnfolder]: 341/844 cut-off events. [2022-11-25 17:16:48,255 INFO L131 PetriNetUnfolder]: For 518/518 co-relation queries the response was YES. [2022-11-25 17:16:48,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 844 events. 341/844 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4330 event pairs, 119 based on Foata normal form. 88/932 useless extension candidates. Maximal degree in co-relation 1207. Up to 308 conditions per place. [2022-11-25 17:16:48,261 INFO L137 encePairwiseOnDemand]: 225/233 looper letters, 23 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2022-11-25 17:16:48,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 234 flow [2022-11-25 17:16:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:16:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:16:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2022-11-25 17:16:48,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5436337625178826 [2022-11-25 17:16:48,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2022-11-25 17:16:48,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2022-11-25 17:16:48,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:48,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2022-11-25 17:16:48,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:48,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:48,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:48,267 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 130 flow. Second operand 3 states and 380 transitions. [2022-11-25 17:16:48,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 234 flow [2022-11-25 17:16:48,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:16:48,271 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 148 flow [2022-11-25 17:16:48,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2022-11-25 17:16:48,272 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2022-11-25 17:16:48,273 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 148 flow [2022-11-25 17:16:48,273 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) [2022-11-25 17:16:48,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:48,273 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:48,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:16:48,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2006535465, now seen corresponding path program 4 times [2022-11-25 17:16:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:48,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422152177] [2022-11-25 17:16:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:48,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:16:48,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:48,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422152177] [2022-11-25 17:16:48,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422152177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:48,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828398297] [2022-11-25 17:16:48,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:16:48,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:48,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:48,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:48,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:16:48,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:16:48,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:16:48,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:16:48,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 17:16:48,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 17:16:48,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828398297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:16:48,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:16:48,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-25 17:16:48,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116938150] [2022-11-25 17:16:48,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:16:48,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:16:48,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:16:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:16:48,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 233 [2022-11-25 17:16:48,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 148 flow. Second operand has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:48,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:48,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 233 [2022-11-25 17:16:48,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:49,191 INFO L130 PetriNetUnfolder]: 489/1066 cut-off events. [2022-11-25 17:16:49,192 INFO L131 PetriNetUnfolder]: For 648/648 co-relation queries the response was YES. [2022-11-25 17:16:49,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 1066 events. 489/1066 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4912 event pairs, 53 based on Foata normal form. 102/1142 useless extension candidates. Maximal degree in co-relation 1225. Up to 222 conditions per place. [2022-11-25 17:16:49,199 INFO L137 encePairwiseOnDemand]: 221/233 looper letters, 121 selfloop transitions, 32 changer transitions 7/163 dead transitions. [2022-11-25 17:16:49,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 163 transitions, 991 flow [2022-11-25 17:16:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 17:16:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-25 17:16:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2469 transitions. [2022-11-25 17:16:49,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5045984058859595 [2022-11-25 17:16:49,206 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2469 transitions. [2022-11-25 17:16:49,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2469 transitions. [2022-11-25 17:16:49,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:49,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2469 transitions. [2022-11-25 17:16:49,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 117.57142857142857) internal successors, (2469), 21 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:49,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 233.0) internal successors, (5126), 22 states have internal predecessors, (5126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:49,222 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 233.0) internal successors, (5126), 22 states have internal predecessors, (5126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:49,222 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 148 flow. Second operand 21 states and 2469 transitions. [2022-11-25 17:16:49,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 163 transitions, 991 flow [2022-11-25 17:16:49,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 163 transitions, 933 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:16:49,228 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 387 flow [2022-11-25 17:16:49,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=387, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2022-11-25 17:16:49,229 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2022-11-25 17:16:49,229 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 387 flow [2022-11-25 17:16:49,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:49,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:49,230 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:49,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:49,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:49,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:49,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:49,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1597238993, now seen corresponding path program 5 times [2022-11-25 17:16:49,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:49,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266512267] [2022-11-25 17:16:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:16:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:49,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266512267] [2022-11-25 17:16:49,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266512267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:49,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222232069] [2022-11-25 17:16:49,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:16:49,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:49,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:49,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:16:49,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-25 17:16:49,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:16:49,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:16:49,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 17:16:49,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:49,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222232069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:49,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:16:49,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-11-25 17:16:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146660313] [2022-11-25 17:16:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:49,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:16:49,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:16:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:16:49,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 233 [2022-11-25 17:16:49,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:49,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:49,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 233 [2022-11-25 17:16:49,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:50,162 INFO L130 PetriNetUnfolder]: 472/1003 cut-off events. [2022-11-25 17:16:50,162 INFO L131 PetriNetUnfolder]: For 1744/1744 co-relation queries the response was YES. [2022-11-25 17:16:50,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3421 conditions, 1003 events. 472/1003 cut-off events. For 1744/1744 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4313 event pairs, 115 based on Foata normal form. 18/1021 useless extension candidates. Maximal degree in co-relation 1613. Up to 380 conditions per place. [2022-11-25 17:16:50,170 INFO L137 encePairwiseOnDemand]: 222/233 looper letters, 62 selfloop transitions, 33 changer transitions 0/97 dead transitions. [2022-11-25 17:16:50,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 731 flow [2022-11-25 17:16:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:16:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:16:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 967 transitions. [2022-11-25 17:16:50,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5187768240343348 [2022-11-25 17:16:50,173 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 967 transitions. [2022-11-25 17:16:50,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 967 transitions. [2022-11-25 17:16:50,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:50,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 967 transitions. [2022-11-25 17:16:50,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:50,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:50,180 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:50,180 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 387 flow. Second operand 8 states and 967 transitions. [2022-11-25 17:16:50,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 731 flow [2022-11-25 17:16:50,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 717 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-25 17:16:50,188 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 497 flow [2022-11-25 17:16:50,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2022-11-25 17:16:50,189 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 45 predicate places. [2022-11-25 17:16:50,189 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 497 flow [2022-11-25 17:16:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:50,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:50,190 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:50,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:50,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:16:50,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:50,405 INFO L85 PathProgramCache]: Analyzing trace with hash 977833227, now seen corresponding path program 6 times [2022-11-25 17:16:50,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:50,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322564956] [2022-11-25 17:16:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:50,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:16:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:50,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322564956] [2022-11-25 17:16:50,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322564956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:50,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150494149] [2022-11-25 17:16:50,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:16:50,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:50,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:50,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:50,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:16:50,911 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-25 17:16:50,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:16:50,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 17:16:50,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:16:51,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:16:51,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150494149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:16:51,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:16:51,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-11-25 17:16:51,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219048076] [2022-11-25 17:16:51,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:16:51,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:16:51,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:16:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:16:51,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 233 [2022-11-25 17:16:51,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 497 flow. Second operand has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:51,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:16:51,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 233 [2022-11-25 17:16:51,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:16:51,417 INFO L130 PetriNetUnfolder]: 325/706 cut-off events. [2022-11-25 17:16:51,417 INFO L131 PetriNetUnfolder]: For 1539/1539 co-relation queries the response was YES. [2022-11-25 17:16:51,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 706 events. 325/706 cut-off events. For 1539/1539 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2540 event pairs, 89 based on Foata normal form. 22/728 useless extension candidates. Maximal degree in co-relation 956. Up to 265 conditions per place. [2022-11-25 17:16:51,423 INFO L137 encePairwiseOnDemand]: 224/233 looper letters, 62 selfloop transitions, 28 changer transitions 0/92 dead transitions. [2022-11-25 17:16:51,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 92 transitions, 756 flow [2022-11-25 17:16:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:16:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:16:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 965 transitions. [2022-11-25 17:16:51,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5177038626609443 [2022-11-25 17:16:51,427 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 965 transitions. [2022-11-25 17:16:51,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 965 transitions. [2022-11-25 17:16:51,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:16:51,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 965 transitions. [2022-11-25 17:16:51,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:51,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:51,435 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:51,435 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 497 flow. Second operand 8 states and 965 transitions. [2022-11-25 17:16:51,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 92 transitions, 756 flow [2022-11-25 17:16:51,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 92 transitions, 698 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-25 17:16:51,444 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 437 flow [2022-11-25 17:16:51,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=437, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2022-11-25 17:16:51,447 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 45 predicate places. [2022-11-25 17:16:51,448 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 437 flow [2022-11-25 17:16:51,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:16:51,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:16:51,449 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:51,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:51,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 17:16:51,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:16:51,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash -618610665, now seen corresponding path program 7 times [2022-11-25 17:16:51,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:51,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790135281] [2022-11-25 17:16:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:51,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:16:51,698 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:16:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:16:51,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:16:51,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:16:51,753 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-25 17:16:51,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-25 17:16:51,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-25 17:16:51,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:16:51,756 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2022-11-25 17:16:51,761 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:16:51,762 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:16:51,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:16:51 BasicIcfg [2022-11-25 17:16:51,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:16:51,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:16:51,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:16:51,863 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:16:51,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:16:37" (3/4) ... [2022-11-25 17:16:51,865 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 17:16:51,970 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:16:51,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:16:51,971 INFO L158 Benchmark]: Toolchain (without parser) took 15928.64ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 141.1MB in the beginning and 157.2MB in the end (delta: -16.1MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. [2022-11-25 17:16:51,971 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 136.3MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:16:51,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 767.33ms. Allocated memory is still 188.7MB. Free memory was 141.1MB in the beginning and 114.7MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-25 17:16:51,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.47ms. Allocated memory is still 188.7MB. Free memory was 114.7MB in the beginning and 111.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:16:51,972 INFO L158 Benchmark]: Boogie Preprocessor took 69.27ms. Allocated memory is still 188.7MB. Free memory was 111.7MB in the beginning and 110.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:16:51,972 INFO L158 Benchmark]: RCFGBuilder took 586.54ms. Allocated memory is still 188.7MB. Free memory was 110.5MB in the beginning and 92.9MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 17:16:51,972 INFO L158 Benchmark]: TraceAbstraction took 14342.71ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 92.9MB in the beginning and 167.7MB in the end (delta: -74.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-11-25 17:16:51,973 INFO L158 Benchmark]: Witness Printer took 107.63ms. Allocated memory is still 272.6MB. Free memory was 167.7MB in the beginning and 157.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:16:51,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 136.3MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 767.33ms. Allocated memory is still 188.7MB. Free memory was 141.1MB in the beginning and 114.7MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.47ms. Allocated memory is still 188.7MB. Free memory was 114.7MB in the beginning and 111.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.27ms. Allocated memory is still 188.7MB. Free memory was 111.7MB in the beginning and 110.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 586.54ms. Allocated memory is still 188.7MB. Free memory was 110.5MB in the beginning and 92.9MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14342.71ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 92.9MB in the beginning and 167.7MB in the end (delta: -74.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 107.63ms. Allocated memory is still 272.6MB. Free memory was 167.7MB in the beginning and 157.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7s, 120 PlacesBefore, 32 PlacesAfterwards, 121 TransitionsBefore, 30 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 98 TotalNumberOfCompositions, 4138 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2599, independent: 2443, independent conditional: 0, independent unconditional: 2443, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1338, independent: 1306, independent conditional: 0, independent unconditional: 1306, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1338, independent: 1272, independent conditional: 0, independent unconditional: 1272, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 66, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 140, independent: 67, independent conditional: 0, independent unconditional: 67, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2599, independent: 1137, independent conditional: 0, independent unconditional: 1137, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 1338, unknown conditional: 0, unknown unconditional: 1338] , Statistics on independence cache: Total cache size (in pairs): 175, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-2, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L915] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L897] 2 num-- [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 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: 14.1s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 486 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 364 mSDsluCounter, 151 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1120 IncrementalHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 47 mSDtfsCounter, 1120 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 302 GetRequests, 243 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=497occurred in iteration=7, InterpolantAutomatonStates: 54, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 424 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 1033 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1072 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 257/282 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-25 17:16:52,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_522b751b-1c9e-4a60-85ac-1395be852d54/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE