./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:58:26,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:58:26,593 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:58:26,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:58:26,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:58:26,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:58:26,645 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:58:26,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:58:26,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:58:26,650 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:58:26,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:58:26,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:58:26,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:58:26,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:58:26,661 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:58:26,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:58:26,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:58:26,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:58:26,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:58:26,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:58:26,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:58:26,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:58:26,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:58:26,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:58:26,668 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:58:26,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:58:26,669 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:58:26,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:58:26,670 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:58:26,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:58:26,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:58:26,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:58:26,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:58:26,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:26,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:58:26,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:58:26,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:58:26,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:58:26,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:58:26,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:58:26,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:58:26,676 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:58:26,676 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:58:26,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:58:26,677 INFO L153 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_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2023-11-26 11:58:27,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:58:27,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:58:27,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:58:27,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:58:27,142 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:58:27,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-26 11:58:30,232 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:58:30,592 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:58:30,596 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-26 11:58:30,621 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/data/3f70418ce/6396358f1b6b4bd09f9b87ad1cba7f12/FLAG9561dccab [2023-11-26 11:58:30,642 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/data/3f70418ce/6396358f1b6b4bd09f9b87ad1cba7f12 [2023-11-26 11:58:30,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:58:30,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:58:30,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:30,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:58:30,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:58:30,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:30" (1/1) ... [2023-11-26 11:58:30,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2219b9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:30, skipping insertion in model container [2023-11-26 11:58:30,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:30" (1/1) ... [2023-11-26 11:58:30,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:58:31,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:31,583 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:58:31,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:31,730 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:58:31,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31 WrapperNode [2023-11-26 11:58:31,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:31,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:31,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:58:31,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:58:31,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,818 INFO L138 Inliner]: procedures = 279, calls = 69, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 275 [2023-11-26 11:58:31,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:31,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:58:31,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:58:31,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:58:31,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,874 INFO L175 MemorySlicer]: Split 35 memory accesses to 8 slices as follows [2, 14, 5, 4, 5, 1, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 0, 5, 0, 0, 0]. The 13 writes are split as follows [0, 8, 0, 2, 0, 1, 1, 1]. [2023-11-26 11:58:31,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:58:31,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:58:31,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:58:31,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:58:31,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (1/1) ... [2023-11-26 11:58:31,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:31,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:31,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:58:32,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:58:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:58:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:58:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:58:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:58:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:58:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:58:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:58:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:58:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:58:32,053 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-26 11:58:32,053 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-26 11:58:32,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:58:32,054 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:58:32,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:58:32,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:58:32,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:58:32,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:58:32,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:58:32,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:58:32,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:58:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:58:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-26 11:58:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-26 11:58:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:58:32,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:58:32,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:58:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:58:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:58:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:58:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:58:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:58:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:58:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:58:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:58:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:58:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:58:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:58:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:58:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:58:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:58:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:58:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:58:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:58:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:58:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:58:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:58:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:58:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:58:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:58:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:58:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:58:32,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:58:32,066 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:58:32,378 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:58:32,381 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:58:33,092 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:58:33,391 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:58:33,391 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-26 11:58:33,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:33 BoogieIcfgContainer [2023-11-26 11:58:33,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:58:33,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:58:33,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:58:33,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:58:33,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:58:30" (1/3) ... [2023-11-26 11:58:33,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488d223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:33, skipping insertion in model container [2023-11-26 11:58:33,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:31" (2/3) ... [2023-11-26 11:58:33,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488d223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:33, skipping insertion in model container [2023-11-26 11:58:33,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:33" (3/3) ... [2023-11-26 11:58:33,401 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-11-26 11:58:33,411 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:58:33,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:58:33,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-26 11:58:33,423 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:58:33,508 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 11:58:33,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 100 transitions, 220 flow [2023-11-26 11:58:33,622 INFO L124 PetriNetUnfolderBase]: 35/203 cut-off events. [2023-11-26 11:58:33,622 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 11:58:33,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 203 events. 35/203 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 821 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2023-11-26 11:58:33,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 100 transitions, 220 flow [2023-11-26 11:58:33,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 100 transitions, 220 flow [2023-11-26 11:58:33,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:58:33,696 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=LoopHeads, 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;@1ce2cd09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:58:33,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-26 11:58:33,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:58:33,702 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:58:33,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:58:33,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:33,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:58:33,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 11:58:33,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash 726500, now seen corresponding path program 1 times [2023-11-26 11:58:33,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043953396] [2023-11-26 11:58:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:33,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:34,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:34,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043953396] [2023-11-26 11:58:34,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043953396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:34,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:34,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:34,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470108015] [2023-11-26 11:58:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:34,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:34,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:34,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-26 11:58:34,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-11-26 11:58:34,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:34,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-26 11:58:34,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:35,557 INFO L124 PetriNetUnfolderBase]: 2836/5779 cut-off events. [2023-11-26 11:58:35,558 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-26 11:58:35,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10418 conditions, 5779 events. 2836/5779 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 38925 event pairs, 2635 based on Foata normal form. 403/5298 useless extension candidates. Maximal degree in co-relation 8655. Up to 4552 conditions per place. [2023-11-26 11:58:35,614 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 57 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-26 11:58:35,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 322 flow [2023-11-26 11:58:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:35,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2023-11-26 11:58:35,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2023-11-26 11:58:35,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 198 transitions. [2023-11-26 11:58:35,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 198 transitions. [2023-11-26 11:58:35,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:35,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 198 transitions. [2023-11-26 11:58:35,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2023-11-26 11:58:35,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-26 11:58:35,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-26 11:58:35,652 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 220 flow. Second operand 4 states and 198 transitions. [2023-11-26 11:58:35,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 322 flow [2023-11-26 11:58:35,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:58:35,667 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 222 flow [2023-11-26 11:58:35,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2023-11-26 11:58:35,675 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-11-26 11:58:35,675 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 222 flow [2023-11-26 11:58:35,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-11-26 11:58:35,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:35,677 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:58:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:58:35,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 11:58:35,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash 169062091, now seen corresponding path program 1 times [2023-11-26 11:58:35,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:35,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446830989] [2023-11-26 11:58:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:35,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:35,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:35,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446830989] [2023-11-26 11:58:35,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446830989] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511787321] [2023-11-26 11:58:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:35,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:35,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:35,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:35,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:58:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:36,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:58:36,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:36,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:36,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511787321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:36,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:36,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-26 11:58:36,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125881223] [2023-11-26 11:58:36,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:36,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:36,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:36,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:36,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:58:36,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 100 [2023-11-26 11:58:36,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2023-11-26 11:58:36,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:36,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 100 [2023-11-26 11:58:36,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:37,453 INFO L124 PetriNetUnfolderBase]: 2836/5778 cut-off events. [2023-11-26 11:58:37,453 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-26 11:58:37,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10430 conditions, 5778 events. 2836/5778 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 38887 event pairs, 2635 based on Foata normal form. 1/4895 useless extension candidates. Maximal degree in co-relation 10410. Up to 4547 conditions per place. [2023-11-26 11:58:37,506 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 54 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2023-11-26 11:58:37,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 338 flow [2023-11-26 11:58:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2023-11-26 11:58:37,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475 [2023-11-26 11:58:37,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 179 transitions. [2023-11-26 11:58:37,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 179 transitions. [2023-11-26 11:58:37,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:37,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 179 transitions. [2023-11-26 11:58:37,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:58:37,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-26 11:58:37,520 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-26 11:58:37,520 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 222 flow. Second operand 4 states and 179 transitions. [2023-11-26 11:58:37,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 338 flow [2023-11-26 11:58:37,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:58:37,527 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 228 flow [2023-11-26 11:58:37,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2023-11-26 11:58:37,528 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2023-11-26 11:58:37,528 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 228 flow [2023-11-26 11:58:37,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2023-11-26 11:58:37,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:37,529 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:58:37,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:37,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:58:37,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 11:58:37,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash 945958267, now seen corresponding path program 1 times [2023-11-26 11:58:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:37,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620444036] [2023-11-26 11:58:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:58:37,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620444036] [2023-11-26 11:58:37,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620444036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:37,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:37,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103003268] [2023-11-26 11:58:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:37,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-26 11:58:37,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2023-11-26 11:58:37,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:37,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-26 11:58:37,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:38,866 INFO L124 PetriNetUnfolderBase]: 2836/5777 cut-off events. [2023-11-26 11:58:38,866 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-26 11:58:38,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10430 conditions, 5777 events. 2836/5777 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 38899 event pairs, 2635 based on Foata normal form. 1/4895 useless extension candidates. Maximal degree in co-relation 10405. Up to 4550 conditions per place. [2023-11-26 11:58:38,921 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 54 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-11-26 11:58:38,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 340 flow [2023-11-26 11:58:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:58:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-11-26 11:58:38,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-26 11:58:38,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-11-26 11:58:38,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-11-26 11:58:38,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:38,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-11-26 11:58:38,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-11-26 11:58:38,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-11-26 11:58:38,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-11-26 11:58:38,929 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 228 flow. Second operand 3 states and 150 transitions. [2023-11-26 11:58:38,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 340 flow [2023-11-26 11:58:38,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:38,940 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 220 flow [2023-11-26 11:58:38,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2023-11-26 11:58:38,942 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-11-26 11:58:38,942 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 220 flow [2023-11-26 11:58:38,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2023-11-26 11:58:38,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:38,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:38,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:58:38,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 11:58:38,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1465889604, now seen corresponding path program 1 times [2023-11-26 11:58:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:38,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273333292] [2023-11-26 11:58:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:39,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:39,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273333292] [2023-11-26 11:58:39,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273333292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:39,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346044846] [2023-11-26 11:58:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:39,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:39,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:39,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:58:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:39,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:58:39,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:39,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346044846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:39,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:58:39,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 11:58:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410929068] [2023-11-26 11:58:39,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:39,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:58:39,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:58:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:58:39,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-26 11:58:39,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 220 flow. Second operand has 10 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 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) [2023-11-26 11:58:39,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:39,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-26 11:58:39,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:40,571 INFO L124 PetriNetUnfolderBase]: 2836/5781 cut-off events. [2023-11-26 11:58:40,571 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2023-11-26 11:58:40,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10441 conditions, 5781 events. 2836/5781 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 38926 event pairs, 2635 based on Foata normal form. 2/4901 useless extension candidates. Maximal degree in co-relation 10403. Up to 4548 conditions per place. [2023-11-26 11:58:40,610 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 54 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-11-26 11:58:40,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 360 flow [2023-11-26 11:58:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:58:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:58:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 280 transitions. [2023-11-26 11:58:40,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-26 11:58:40,614 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 280 transitions. [2023-11-26 11:58:40,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 280 transitions. [2023-11-26 11:58:40,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:40,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 280 transitions. [2023-11-26 11:58:40,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 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) [2023-11-26 11:58:40,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 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) [2023-11-26 11:58:40,619 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 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) [2023-11-26 11:58:40,619 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 220 flow. Second operand 7 states and 280 transitions. [2023-11-26 11:58:40,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 360 flow [2023-11-26 11:58:40,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:58:40,625 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 249 flow [2023-11-26 11:58:40,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2023-11-26 11:58:40,627 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2023-11-26 11:58:40,628 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 249 flow [2023-11-26 11:58:40,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 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) [2023-11-26 11:58:40,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:40,628 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:40,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 11:58:40,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:40,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 11:58:40,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1140709212, now seen corresponding path program 2 times [2023-11-26 11:58:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883676254] [2023-11-26 11:58:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:58:40,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:40,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883676254] [2023-11-26 11:58:40,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883676254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:40,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:40,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:40,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173187826] [2023-11-26 11:58:40,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:40,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:40,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:40,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-26 11:58:40,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2023-11-26 11:58:40,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:40,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-26 11:58:40,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:42,063 INFO L124 PetriNetUnfolderBase]: 2730/5508 cut-off events. [2023-11-26 11:58:42,063 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-26 11:58:42,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9969 conditions, 5508 events. 2730/5508 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 36227 event pairs, 1368 based on Foata normal form. 6/4687 useless extension candidates. Maximal degree in co-relation 9926. Up to 4332 conditions per place. [2023-11-26 11:58:42,109 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 69 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-11-26 11:58:42,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 411 flow [2023-11-26 11:58:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2023-11-26 11:58:42,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2023-11-26 11:58:42,111 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 194 transitions. [2023-11-26 11:58:42,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 194 transitions. [2023-11-26 11:58:42,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:42,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 194 transitions. [2023-11-26 11:58:42,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2023-11-26 11:58:42,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-26 11:58:42,116 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-26 11:58:42,116 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 249 flow. Second operand 4 states and 194 transitions. [2023-11-26 11:58:42,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 411 flow [2023-11-26 11:58:42,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 397 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:42,126 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 241 flow [2023-11-26 11:58:42,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-11-26 11:58:42,130 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2023-11-26 11:58:42,130 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 241 flow [2023-11-26 11:58:42,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2023-11-26 11:58:42,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:42,131 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:42,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:58:42,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 11:58:42,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:42,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1087664861, now seen corresponding path program 1 times [2023-11-26 11:58:42,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:42,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565703501] [2023-11-26 11:58:42,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:42,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:58:42,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:42,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565703501] [2023-11-26 11:58:42,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565703501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:42,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232452577] [2023-11-26 11:58:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:42,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:42,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:42,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:42,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:58:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:42,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:58:42,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:58:42,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:58:42,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232452577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:42,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:58:42,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 11:58:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847181483] [2023-11-26 11:58:42,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:42,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:58:42,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:42,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:58:42,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:58:42,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-26 11:58:42,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 241 flow. Second operand has 18 states, 18 states have (on average 32.27777777777778) internal successors, (581), 18 states have internal predecessors, (581), 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) [2023-11-26 11:58:42,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:42,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-26 11:58:42,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:44,320 INFO L124 PetriNetUnfolderBase]: 2730/5510 cut-off events. [2023-11-26 11:58:44,320 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2023-11-26 11:58:44,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10014 conditions, 5510 events. 2730/5510 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 36124 event pairs, 2563 based on Foata normal form. 4/4692 useless extension candidates. Maximal degree in co-relation 9937. Up to 4344 conditions per place. [2023-11-26 11:58:44,365 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 54 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2023-11-26 11:58:44,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 427 flow [2023-11-26 11:58:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:58:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:58:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 538 transitions. [2023-11-26 11:58:44,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586666666666667 [2023-11-26 11:58:44,369 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 538 transitions. [2023-11-26 11:58:44,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 538 transitions. [2023-11-26 11:58:44,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:44,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 538 transitions. [2023-11-26 11:58:44,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 35.86666666666667) internal successors, (538), 15 states have internal predecessors, (538), 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) [2023-11-26 11:58:44,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 100.0) internal successors, (1600), 16 states have internal predecessors, (1600), 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) [2023-11-26 11:58:44,376 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 100.0) internal successors, (1600), 16 states have internal predecessors, (1600), 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) [2023-11-26 11:58:44,376 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 241 flow. Second operand 15 states and 538 transitions. [2023-11-26 11:58:44,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 427 flow [2023-11-26 11:58:44,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 421 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:44,381 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 332 flow [2023-11-26 11:58:44,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=332, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2023-11-26 11:58:44,382 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2023-11-26 11:58:44,382 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 332 flow [2023-11-26 11:58:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 32.27777777777778) internal successors, (581), 18 states have internal predecessors, (581), 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) [2023-11-26 11:58:44,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:44,383 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:44,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:44,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:44,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 11:58:44,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1631535715, now seen corresponding path program 2 times [2023-11-26 11:58:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442065941] [2023-11-26 11:58:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:58:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:45,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442065941] [2023-11-26 11:58:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442065941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568095560] [2023-11-26 11:58:45,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:58:45,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:45,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:45,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:45,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:58:45,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:58:45,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:58:45,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:58:45,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:58:45,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:58:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568095560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:46,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:58:46,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-26 11:58:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470258251] [2023-11-26 11:58:46,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:46,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-26 11:58:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:46,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-26 11:58:46,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 11:58:46,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-26 11:58:46,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 332 flow. Second operand has 34 states, 34 states have (on average 32.14705882352941) internal successors, (1093), 34 states have internal predecessors, (1093), 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) [2023-11-26 11:58:46,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:46,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-26 11:58:46,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:47,665 INFO L124 PetriNetUnfolderBase]: 2730/5534 cut-off events. [2023-11-26 11:58:47,666 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-11-26 11:58:47,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10125 conditions, 5534 events. 2730/5534 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 36119 event pairs, 2563 based on Foata normal form. 8/4720 useless extension candidates. Maximal degree in co-relation 9928. Up to 4344 conditions per place. [2023-11-26 11:58:47,720 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 54 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2023-11-26 11:58:47,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 114 transitions, 646 flow [2023-11-26 11:58:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 11:58:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-26 11:58:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1054 transitions. [2023-11-26 11:58:47,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2023-11-26 11:58:47,726 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1054 transitions. [2023-11-26 11:58:47,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1054 transitions. [2023-11-26 11:58:47,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:47,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1054 transitions. [2023-11-26 11:58:47,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 34.0) internal successors, (1054), 31 states have internal predecessors, (1054), 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) [2023-11-26 11:58:47,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 100.0) internal successors, (3200), 32 states have internal predecessors, (3200), 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) [2023-11-26 11:58:47,738 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 100.0) internal successors, (3200), 32 states have internal predecessors, (3200), 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) [2023-11-26 11:58:47,739 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 332 flow. Second operand 31 states and 1054 transitions. [2023-11-26 11:58:47,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 114 transitions, 646 flow [2023-11-26 11:58:47,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 628 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 11:58:47,745 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 555 flow [2023-11-26 11:58:47,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=555, PETRI_PLACES=145, PETRI_TRANSITIONS=114} [2023-11-26 11:58:47,746 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 58 predicate places. [2023-11-26 11:58:47,746 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 555 flow [2023-11-26 11:58:47,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 32.14705882352941) internal successors, (1093), 34 states have internal predecessors, (1093), 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) [2023-11-26 11:58:47,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:47,747 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:47,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:47,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:47,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-26 11:58:47,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1321536739, now seen corresponding path program 3 times [2023-11-26 11:58:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:47,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712291035] [2023-11-26 11:58:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:47,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:58:49,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712291035] [2023-11-26 11:58:49,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712291035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249211291] [2023-11-26 11:58:49,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:58:49,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:49,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:49,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:49,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12593490-3687-44af-8715-16e302320758/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process